Ford C6

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Categories: Ford C6, Transmission Parts. Description Additional information Description. Same as our standard wide ratio gear kit with the addition of #9 needle bearing kit, rollerized reverse planet gear and high strength reverse hub. This kit will not only lower your 1st and 2nd gear ratios, it will also rollerize all critical areas of your. Ford Performance Parts M-6750-E303 - Ford Performance Parts Transmission Chrome Dipsticks Transmission Dipstick, Steel, Chrome, Ford, Lincoln, Mercury, C-6, Each Part Number: FMS-M-6750-E303. The C6 transmission was developed and created by Ford in the 1960s. It was very similar to the C4 transmission that was created a few years earlier, except that the C6 was designed to accommodate more torque and power than the C4, and generally to be used in the larger engine applications.

Shortcuts to Sections on this page:

Model A Vehicle Registration Serial Number and Location

Model A & B Engine Number Assignment

Model A Engine Block Number Location

Rouge Series Model A Engine Serial Numbers

Canadian Series Model A Engine Serial Numbers

Model B Engine Block Number Location

Rouge Series Model B Engine Serial Numbers

Canadian Series Model B Engine Serial Numbers

Overview

This (lengthy) page details engine serial number location, dates, and identification for Model A Ford and Model B Ford engines. The engine serial number was used as the defacto VIN number of the vehicle, as noted by Ford in the vehicle owner's manual Instruction Book below.

Model A Vehicle Serial Number and Location

As shown above in the 1928 Model A Ford Instruction Book, Ford did in fact specify the engine number to be the 'serial number' of the vehicle, during the Model A (and B) era, and throughout the 1930's. The Specifications and License Data page above in the Instruction Book is quite clear and specific about this.

It is popularly but incorrectly claimed that the serial number of the vehicle was a frame number. Actually, not all Model A vehicles even had a frame number. A great many did not have a frame number stamped, and it varied depending on when and which of the more than two dozen assembly plants completed the vehicle final assembly. There is no Ford literature available indicating a frame number was ever intended for any primary identification of a vehicle by Ford.

When present, the frame number was a duplicate of the original engine number of that chassis. The engine number was assigned and stamped at the Rouge and was usually, but not always, later stamped on the top of the frame flange at the vehicle assembly plant as a backup to aid in positive identification of stolen vehicles. In the 1930's, vehicle theft was actually quite a large problem.

A check for a possible frame number requires removal of the body and fender splash aprons from the frame. Any number present is frequently obscured or illegible due to corrosion and pitting from moisture held by the cotton frame webbing between the frame and body.

The engine number, not a frame number, was the original serial number of the vehicle for title and registration purposes. This is true throughout the Ford Model A and B US and Canadian production era.

Engine Serial Number Prefixes

The engine serial number is separate from the alpha prefix letter(s). The numeric serial number is unique and is not directly correlated to the prefix letter(s). The prefix is preceded by a ☆ character, and the numeric serial number is followed by a ☆ character, as shown in the pic above.

Most Model A Ford engines found in North and South America with serial number prefixes A, AA, AF, or AAF, and Model B Ford engines with serial number prefixes AB, AAB, B, or BB were built at the Ford Rouge manufacturing complex in Dearborn, Michigan.

Some engines produced at the Rouge for export also carried the marking 'Ford U.S.A.' stamped on the pad below the serial number, as illustrated in the pic above.

Model A and B engines were also built worldwide, including at Windsor, Canada, at Manchester and later Dagenham, England, at Köln, Germany, and at Gorky Automobile Zavod 'ГАЗ' (GAZ), USSR from the 1930's through 1950's.

Model A and B engines were also produced by Ford at Dagenham, England, at Cork, Ireland, and at Köln, Germany. These engines variously carried serial number prefixes A, AF, AA, B, BF, and BB, however with distinctly identifiable numeric serial numbers based on place of manufacture.

Both Dagenham and Köln used serial numbers assigned from groups of numbers granted by the Rouge from within the larger sequence of Rouge numbers. Some Model B engines having an AA prefix and Rouge group serial numbers were also built and stamped at Dagenham in 1935 and 1936 and were used in Model AA trucks having factory Model B engines. Book memoirs of a geisha.

Model A engines with serial number prefix CA, CAA, CAW, CAAW, CAE, CAAE, CAR, CAAR, CAT, CAAT, CAY, CAAY, CAU, CAAU, CAI, CAAI, CAO, CAAO, CAP, CAAP, CAS, CAAS, CAD, and CAAD, and Model B engines with serial number prefix CBG and CBQ were built and stamped at Ford of Canada in East Windsor (Ford City), Ontario. Ford Canada used serial number series of their own creation and control.

Please see the relevant section below for detail information on engine serial numbers for each A or B engine type and production location of interest.
I am also seeking any information about serial numbering used on GAZ A and B engines produced in the Soviet Union in the 1930's through 1950's, as well as G28T (improved B) engines produced at Köln in the 1940's and 50's.

Model A & B Engine Number Assignment

The engine number was assigned to completed engines after they had passed the electric motor-driven engine run-in (run-off) tests and were released for vehicle final assembly. The engine number then became the serial number for the completed vehicle after final (vehicle) assembly.

Important Note:
The engine serial number only dates the final approval of the assembled run-in engine, not the casting dates of the engine components, not the actual assembly date of the engine components, and not the assembly date of the vehicle.

The vehicle was sometimes assembled up to 3 months after the engine was assembled, tested, and numbered. Engines also were not used in vehicle final assembly in the same sequence that the engine itself was produced or numbered.

At the time of vehicle final assembly, the pre-existing engine number was also usually stamped on the vehicle frame in one or more locations (top of LH frame rail near the Number One body bolt).

The number cannot be inspected without removal of sheet metal and lifting of the body off the frame because the frame number was covered with the splash apron and body. Additionally, it is usually difficult or impossible to read the frame number due to frame corrosion and pitting from the moisture held by the cotton frame webbing. (Additional note: frame serial numbers were typically not stamped on Canadian-built Model A's).

This delay between engine component production, engine assembly, engine test, approval, and numbering at the Rouge, and subsequent vehicle final production at one of the 30+ Assembly Plants or Branches nationwide varied based on the location of the final assembly plant, as well as the different production schedules and rates between plants.

Important Points:
Thus it is common to find an apparent 'later' car with an 'earlier' engine when comparing two vehicles to each other. An 'earlier' engine could be defined as one with either an earlier serial number (indicating engine approval date), or one having earlier part feature characteristics than the serial number (date) would nominally indicate.
Examining the production sequence backwards, this seeming discrepancy is the valid result based on when and where the cars were final assembled, when their engines passed final test and were numbered, when their engines were assembled from components, and when their actual individual engine components were produced. Delays occurred at any combinations of steps in the processes.
It is possible to have a complete engine assembly which was produced using 'earlier' parts or castings, and yet having a 'later' engine number, due to delays and rework within the Engine Production Department at the Rouge. Production Foreman's (handwritten) daily logs and journals on file at the Benson Ford Research Center detail many engines which were delayed or round-tripped within the assembly process, prior to final test, approval, and numbering.
Additionally, it is also possible to have a car assembled at a much later date than the engine numbering date, due to slow sales and vehicle production (especially during 1931), and freight distance from the Rouge to the several west coast assembly plants. Many completed and numbered engines were warehoused and stored for extended periods before assignment and installation in a vehicle.
One consequence of the delayed use of warehoused engines is that it is possible to find a 1931 Model A which has a mid-February or earlier built engine having the early numeral styles (fonts), which was installed in a chassis after mid-February, and which has the frame number stamped using the later style numerals 1, 6, and 9. Thus both style numeral stampings are found on the same car, meaning the engine number font and any frame number font do not match.

Again, these delays are due to production scheduling variations, as well as the later use of any engines within the engine production process that did not pass run-in test the first (or subsequent) time and were sent back for engine rework and retest before subsequent approval and numbering, and then ultimate use in vehicle assembly.

Additionally, the original engine production ledgers on file at the Benson Ford Research Center clearly show, by serial number, hundreds of engines which were re-numbered at the Rouge with entirely new engine numbers. Some of these engines were ones which were returned from branches for subsequent scrap, salvage, or recovery/refurbish. In those cases, the original 'starred' upper number was 'X'd out', and a new starred number was stamped below it.

In some cases the second row stamping was to correct an obvious 'typo' in the first stamping, and in other cases the numbers are substantially different and the reason for change is not apparent.

All Model A engine serial numbers were hand-stamped on the left hand side of the engine block, above the water inlet as shown above. There were variations in the spacing, position, orientation, and sharpness of individual numerals due to the manual alignment and stamping operation.

The number pad itself was an as-cast surface on US-produced engines and was not machined flat. However, some early 1928 and some Canadian-produced and numbered engine blocks were stamped on a machined pad surface, not on an as-cast surface.

In the case of US built Rouge engines, the original number is always in the top half of the cast pad. If the engine was re-numbered at the Rouge, then the upper number was obscured with a series of 'X' stamps over the number, and then the new or corrected number was stamped on the pad directly below the original number. The re-number also included the stars and A or AA prefix.

Large Bore & Small Bore, LHD & RHD Model A Engine Production

The engine number is distinct from the alpha prefix letter(s). The numeric serial number is unique and is not directly correlated to the prefix letter(s). The prefix is preceded by a ☆ character, and the numeric serial number is followed by a closing ☆ character.

Ford also built Right Hand Drive (RHD) engine assemblies and vehicles at the Rouge as well. These Rouge-built engines were primarily destined for South America and Japan, not the British Empire. Only the specific engine serial number, not the prefix nor type, can identify the actual engine production facility as being either the Rouge or Dagenham, England. Canadian-produced engines can be readily identified by their Canada-unique prefixes and serial numbers.

RHD engines and vehicles produced in Canada for export to British Empire countries carried typical Canadian engine number prefixes, and the prefix did not indicate if the engine and chassis was configured for RHD or LHD usage.

Engines produced at the Rouge for RHD usage carried the 'F' in the engine number prefix, such as '☆AF' or '☆AAF'. At the Rouge, the 'F' indicated that the engine and chassis was configured for RHD usage.

For example, engine serial number 1234567☆ was produced at the Rouge and might have had a prefix of ☆A, ☆AA, ☆AF, or ☆AAF depending on whether it was for a car or truck (clutch), and whether it was for a large bore engine and transmission assembly for the US, or for a RHD large bore engine and transmission assembly produced at the Rouge for export to a RHD non-British Empire country (such as Japan or certain South American countries).

Rouge-built:
Large bore 'AF' prefix serial number engines were produced and numbered at the Rouge for all RHD vehicles except those produced in England and Canada. The 'AF' indicated that the Rouge-produced vehicle was a RHD large bore engine and chassis configuration.

These Rouge-built RHD engines/chassis were primarily exported to South American RHD countries and Japan.

British-built:
Small bore 14.9 HP (R.A.C.) engines were produced in Cork, Ireland and England (primarily RHD) and used serial numbers from assigned number groups granted by the Rouge to the foreign engine plants. These engines were primarily for domestic use in Great Britain and Ireland, not for export.

An 'F' in the prefix of a British-built engine indicates the small bore engine, not whether it was for a RHD or LHD chassis. Large bore British-built engines did not carry the 'F' in the engine number prefix, nor did RHD English-produced chassis. The 'AF' in the engine number and in the vehicle Model name indicated only that the British-produced vehicle had a small bore 14.9 HP (R.A.C.) engine.

For example, engine serial number 700001☆ was in a group of Rouge numbers which were assigned by Dearborn to Ford's engine production operations in Manchester and Dagenham, England for their use, and may have ultimately had a prefix of ☆A or ☆AA depending on whether it was destined for a car or truck (clutch). It may also have had an 'F' in the prefix (i.e. ☆AF) to indicate if it was assigned to a small bore engine.

Canadian-built:
All Canadian-produced engines carried Canadian-unique serial numbers and prefixes, and were not assigned from the Rouge number series, nor did they use ☆A, ☆AA, ☆AF, or ☆AAF Rouge prefixes.

Canadian-produced RHD vehicles were primarily destined for export to British Empire countries such as Australia, New Zealand, South Africa, India, Singapore, and elsewhere, but not Great Britain itself.

Canadian engine production records, prefixes, and details follow in the second table below, after the Rouge records.

US (Rouge-built) Model A Engines

The first table below shows the Rouge engine production records and information available from the Benson Ford Research Center. The exact dates in the table come from the original Foreman's handwritten notes and records in the original Daily Engine Production Log books.

The table below also indicates some series or groups of numbers which were transferred by the Rouge to Ford's other engine production facilities worldwide at Manchester, Dagenham, and Köln.

Those numbers were reserved by the Rouge for the foreign (Cork, Manchester, Dagenham and Köln) operation's local production use and assignment on both engines and vehicles they produced throughout the 1930's, continuing well after US Model A and B regular vehicle production had ended.

Those foreign operations built mixes of small and large bore engines, in both LHD and RHD configurations, and those engines would have a 'Rouge' number, though the engine was built and numbered elsewhere in the world.

These foreign-use numbers are sometimes referred to as 'omitted' numbers since they were not actually physically stamped at the Rouge facility in the US.

In some cases, there are two dates relating to foreign serial number transactions in the table below.

The first is the date on which Rouge administration identified, reserved, and pre-assigned that range of 'Rouge' serial numbers for future use by a foreign manufacturing or assembly plant for their local (Cork, Manchester, Dagenham and Köln) application, independent of the daily Rouge operations. These groups of numbers are sometimes referred to as 'omitted' numbers.

The second is the actual (later) Dearborn date when the Rouge shop-floor engine production operation reached that previously-reserved range of serial numbers. That is the day the Rouge had to 'skip over' or 'omit' that group of pre-assigned foreign serial numbers during their daily US engine production numbering and stamping operations.

This second date may have been only days, months, or possibly even years after the initial 'reservation' and reassignment of the numbers for foreign use. During the early heyday of Model A production, serial number assignments for foreign use were essentially made on an as-requested, running, and instantaneous basis.

During the Model A late-production and post-production era throughout the 1930's at the Rouge, there were large time gaps between dates when groups of numbers were pre-assigned for foreign use, and when the Rouge shop-floor daily production operations actually reached and skipped-over that group of foreign-reserved numbers.

Production Timeline Legend
White shading indicates monthly production records summary from the Benson Ford Research Center.
Green shading indicates a production milestone or unique engine data point for reference.
Grey shading indicates a foreign assignment or application of 'Rouge' serial numbers.
A few specific examples of foreign use of a 'Rouge' serial number are included for illustration.
Rouge Series Model A Ford Engine Serial Numbers
Rouge
Number
Prefix
Starting
Engine
Number
Ending
Engine
Number
DateNotes
☆A1☆Engine number 1 stamped October 20, 1927
A / AA1137October 1927
A / AA138971November 1927
A / AA / AF / AAF9725275December 1927
A / AA / AF / AAF527617251January 1928
A / AA / AF / AAF1725236016February 1928
☆A19986☆First engine with bead in oil pan for oil tray, numbered February 9, 1928
A / AF3601767700March 1928
A / AF67701109740April 1928
A / AF109741150000May 1928
158001160000May 29, 19282,000 #'s transferred to Cork for
small bore 14.9 HP (R.A.C.) AF engines
A / AF160001165726May 1928
A / AF165727224276June 1928
A / AF224277254000July 1928
254001256000July 16, 19282,000 #'s transferred to Cork for
small bore 14.9 HP (R.A.C.) AF engines
☆A256479☆Experimental engine having no external oil return pipe, numbered July 16, 1928
A / AF256001295707July 1928
A / AF295708384867August 1928
A / AF384868419000September 1928
419001422000September 13, 19283,000 #'s transferred to Cork for
small bore 14.9 HP (R.A.C.) AF engines
A / AF422001473012September 1928
A / AA / AF / AAF473013585696October 1928
492511☆Bendix Starter Drive replaced Abell Starter Drive
A / AA / AF / AAF585697697829November 1928
A / AA / AF / AAF697830700000December 1928
700001704000December 3, 19284,000 #'s transferred to Manchester
A / AA / AF / AAF704001810122December 1928
A / AA / AF / AAF810123940000January 1929
940001950000January 25, 192910,000 #'s transferred to export
A / AA / AF / AAF950001983136January 1929
A / AA / AF / AAF9831371127171February 1929
☆AA995080☆'Ford USA' is factory stamped with the engine number on a
Rouge-built AA engine in Portugal (João Paulo Gonçalves)
☆IAA998339☆☆IAA998339☆ is factory stamped on a
Rouge-built industrial AA engine in Illinois (Mark Maron)
☆A1000000☆Engine ☆A1000000☆ numbered 3:07 pm, February 4, 1929
A / AA / AF / AAF11271721298827March 1929
A / AA / AF / AAF12988281478647April 1929
A / AA / AF / AAF14786481663401May 1929
A / AA / AF / AAF1663402180000June 1929
18000011810000June 22, 192910,000 #'s transferred to export
A / AA / AF / AAF18100011854831June 1929
A 1819477Rouge-built engine is installed in a Model A at Asnieres, France, having
an original Asnieres brass serial number / firewall patent data plate
Started using 1/8 pipe plug in intake manifold, June 18, 1929
A / AA / AF / AAF18548322045422July 1929
☆A2000000☆Engine ☆A2000000☆ numbered 4:50 pm, July 24, 1929
A / AA / AF / AAF20454232243920August 1929
A / AA / AF / AAF22439212396932September 1929
A / AA / AF / AAF23969332571781October 1929
A / AA / AF / AAF25717822678140November 1929
A / AA / AF / AAF26781412742695December 1929
A / AA / AF / AAF27426962826649January 1930
A 2786714Rouge-built engine is installed in a 1930 Briggs Town Sedan
final-assembled after January 1930 at Asnieres, France, and having an original
Asnieres brass serial number / firewall patent data plate (Michael Schwarzer)
A / AA / AF / AAF28266502940776February 1930
☆AF2903908☆Rouge-built RHD big bore AF engine in Nebraska (Rodney Gage)
Was likely from a RHD vehicle repatriated to the US from South America,
or from a US-sold RHD vehicle for rural mail delivery, for example.
A / AA / AF / AAF29407772950000March 1930
29500012960000March 4, 193010,000 #'s transferred to Manchester
A / AA / AF / AAF29600013010000March 1930
☆A3000000☆Engine ☆A3000000☆ numbered 9:10 am, March 12, 1930
30100013020000January 29, 1930
March 13, 1930
10,000 #'s transferred to Manchester
A / AA / AF / AAF30200013114465March 1930
A / AA / AF / AAF31144663304703April 1930
3304703☆Last RHD AF or AAF prefix engine stamped at the Rouge, May 1, 1930
A / AA33047043450000May 1930
34500013460000March 25, 1930
May 22, 1930
10,000 #'s transferred to Manchester
A / AA34600013509306May 1930
A / AA35093073702547June 1930
A / AA37025483730000July 1930
37300013740000March 25, 1930
July 8, 1930
10,000 #'s transferred to Manchester
A / AA37400013771362July 1930
A / AA37713633883888August 1930
A / AA38838893950000September 1930
39500013960000August 21, 1930
September 17, 1930
10,000 #'s transferred to Manchester
A / AA39600014005973September 1930
☆A4000000☆Engine ☆A4000000☆ numbered 9:30 am, September 29, 1930
4098041☆All engines after this number have nickel alloy exhaust valves,
September 30, 1930
A / AA40059744093995October 1930
A / AA40939964177733November 1930
A / AA41777344237500December 1930
A / AA42375014250000January 1931
42500014260000December 1, 1930
January 13, 1931
10,000 #'s transferred to Manchester
A 4250640Manchester-assigned engine number was on a big bore block
in a Tudor sedan sold new on April 1, 1931 in Dronningborg, Denmark
A / AA42600014310300January 1931
A / AA43103014393627February 1931
☆A4365834☆First engine stamped with new numerals 1-6-9, February 18, 1931
A / AA43936284450000March 1931
44500014460000January 26, 1931
March 18, 1931
10,000 #'s transferred to Manchester
A 4456124Manchester-assigned engine number is found on big bore block in Flensburg, Germany
A / AA44600014470000March 1931
44700014490000February 23, 1931
March 23, 1931
20,000 #'s transferred to Manchester
4472283Manchester-assigned engine number is applied to a
1931 Briggs Sedan in Denmark, and having an original
Fred Rasmussen & Co. floor board serial number plate (Per Jensen)
A / AA44900014520831March 1931
A / AA45208324521600April 1931
☆A20000000☆
actual stamping
Ford engine ☆A20000000☆ run-off and numbered 9:55 am, April 1, 1931
20,000,000th Ford (1931 SW Sedan)
Driven off final assembly line in ceremony April 14, 1931
A / AA45216014611921April 1931
A / AA46119224695999May 1931
4634572☆Four extra holes in oil pan tray for Mr. P.E. Martin, May 11, 1931
☆AX4687000☆☆AX4687003☆Four experimental 'AX' prefix engines, May 12-13, 1931
A / AA46960004746730June 1931
4700000☆Shield on oil pump, 1/8 lower tray for Mr. P.E. Martin, June 3, 1931
A / AA47467314777282July 1931
4751775☆Begin production use of low dipper oil tray July 7, 1931
Begin production use of hex drain plug bung oil pan July 14, 1931
~~August 1931No Rouge engine production
A / AA47772834780000September 1931
47800014800000May 13, 1931
September 9, 1931
20,000 #'s transferred to Manchester
48000014803000June 1, 1931
September 9, 1931
3,000 #'s transferred to Köln
A / AA48030014824809September 1931
A / AA48248104826746October 1931
A / AA48267474830806November 1931
~~December 1931No Rouge engine production
A / AA48308074830900January 1932
48309014840900May 13, 1931
January 3, 1932
10,000 #'s transferred to Dagenham
AA 4832774Dagenham-assigned engine number is applied to a
Type AA 3 Long truck built at Asnieres, France after May 1931
A / AA48409014842983January 1932
A / AA48429844843000February 1932
48430014844000January 25, 1932
February 1, 1932
1,000 #'s transferred to Köln
A / AA48440014846691February 1932
A / AA48466924849340March 1932
A / AA48493414850000April 1932
48500014855000January 27, 1932
April 7, 1932
5,000 #'s transferred to Dagenham
☆AA4854953☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in New Zealand (Justin Bicknell)
A / AA48550014855171April 1932
A / AA48551724856255May 1932
A / AA48562564856745June 1932
A / AA48567464857556July 1932
A / AA48575574857988August 1932
4857695☆First Rouge production use of Model B camshaft and push rods (tappets)
in Model A engines, August 11, 1932
☆AA4857843☆Begin 100% use of Model B camshaft and push rods (tappets)
in Model A engines, August 11, 1932
A / AA48579894858476September 1932
A / AA48584774858703October 1932
A / AA48587044858930November 1932
A / AA48589314858979December 1932
A / AA485898048590001933
48590014859800October 10, 1932
July 27, 1933
800 #'s transferred to Köln
A / AA485980148599481933
A / AA485994948605091934
A / AA486051048608001935
48608014862800February 16, 1933
April 19, 1935
2,000 #'s transferred to Dagenham
48628014864800October 5, 1935(33)
*verify
2,000 #'s transferred to Dagenham
A / AA486480148653841935
Un-numbered Model A 'Diamond' block in Michigan
D305 casting code, April 30, 1935
48655014866500June 14, 1935
1,000 #'s transferred to Köln
A / AA486538548677151936
☆A4866627☆Model A 'Diamond' block in Alabama (Bill Stocks)
L25 casting code, December 2, 1935
☆A4866733☆Model A 'Diamond' block in Arizona (Jim Henson)
A / AA486771648700831937
☆A4868836☆Baldwin Gleaner Combine Model A 'Diamond' block in Kansas
B227 casting code, February 22, 1937
☆A4868862☆Baldwin Gleaner Combine Model A engine and block in Oklahoma
with A-6019-BR front timing cover
☆A4869469☆Model A 'Diamond' block in Maine (Bill Alexander)
C57 casting code, March 5, 1937
☆A4869984☆Model A 'Diamond' block having Model B camshaft in Ohio
K186 casting code, November 18, 1936
A / AA487008448727541938
☆A4870709☆Model A 'Diamond' block having hardened exhaust valve seats
in California (Marco Tahtaras)
☆A4871839☆Model A 'Diamond' block having Model B camshaft in Nebraska (Rod Gage)
☆A4871891☆Baldwin Gleaner Combine Model A 'Diamond' block from Nebraska
having a 1937 casting date code
A / AA487275548727991939
A / AA487280048728431940
A / AA487284448728641941
A / AA4872865Last Rouge-built and numbered Model A engine?
January 31, 1944
A / AA48728664900000Any exist?
49000014920000May 13, 193120,000 #'s
returned from Manchester?
A / AA49200014978900Any exist?
49789015000000October 30, 193(4)
? *verify
22,000 #'s transferred to Dagenham
☆AA4854953☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in New Zealand (Justin Bicknell)
☆AA4981139☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in England (John Charlton)
☆AA4981465☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in England (John Charlton)

Canadian Model A Engines

Model A engines were also built and assembled in East Windsor (Ford City), Ontario.

Canadian-produced Model A engine numbers were also stamped on the engine block left hand side, the same location as US-produced engines. The engine number consisted of prefix letters and a unique numeric serial number. The prefix was preceded by a ☆ character. The numeric serial number was followed by a closing ☆ character.

The engine serial number was separate from the prefix letters, together making the complete unique engine number. The engine number was unique and was not directly correlated to the prefix letters or to US production engine numbers.

Canadian-produced engines were numbered with a letter prefix starting with ☆CA, indicating Canada. The prefix was then followed by an additional 'A' if it was a truck engine.

As an example, a 'CAA' in place of the letters 'CA' in the individual unique engine number's prefix designated that the engine was equipped with a truck clutch. For example, ☆CAAQ followed by the serial number and a closing ☆ character was a truck engine (had a truck clutch).

Following the letter prefix was a sequentially increasing numerical serial number starting with '1', and ending with a closing ☆ character.

After 'CA' serial number 150120 (☆CA150120☆), an additional letter, such as Q, W, E, R, T, Y, U, I, O, P, S, and D, was added to the prefix, following the layout of the QWERTY typewriter keyboard.

Prefix examples are CAQ, CAW, CAE, CAR, CAT, CAY, CAU, CAI, CAO, CAP, CAS, and CAD. Each of those prefix series had a maximum of 10,000 serial numbers associated to it, before advancing to the next letter prefix series and starting over at numeral '1'. An 'AA' rather than an 'A' in the prefix indicated a truck engine.

Shown above is what I believe to be an authentic early Canadian engine ☆CA3834☆ from April 1928. Note the small sized number pad. What makes it unusual is that the number pad appears to be machined flat in the same plane as the water inlet boss. Later number pads were un-machined as-cast surfaces.

The table below shows the information available from Ford of Canada Historical Archives.

Canadian QWERTY Series Model A Engine Numbers
Canadian
Model A
Prefix
Starting
Engine
Number
Ending
Engine
Number
End
Date
CA / CAA1479February 28, 1928
CA / CAA4803229March 31, 1928
April 1928Car and truck clutch spring commonized.
CAA truck engine prefix discontinued.
CA32307172April 30, 1928
CA717313772May 31, 1928
☆CAA10728☆Stronger clutch spring released for trucks.
CAA prefix reinstated for all truck engines.
CA / CAA1377322563June 30, 1928
CA / CAA2256432817July 31, 1928
CA / CAA3281844610August 31, 1928
CA / CAA4461153531September 30, 1928
CA / CAA5353263174October 31, 1928
CA / CAA6317571370November 30, 1928
CA / CAA7137178127December 31, 1928
CA / CAA7812889474January 31, 1929
☆CA78201☆Single disc clutch usage began.
CA / CAA89474102209February 28, 1929
CA / CAA102210115460March 31, 1929
CA / CAA115461128690April 30, 1929
CA / CAA128691137105May 31, 1929
CA / CAA137106141953June 30, 1929
CA / CAA141954146518July 31, 1929
CA / CAA146519150120August 31, 1929
CAQ / CAAQ110000November 4, 1929
CAW / CAAW110000February 4, 1930
CAE / CAAE110000March 14, 1930
CAR / CAAR110000April 14, 1930
CAT / CAAT110000May 13, 1930
CAY / CAAY110000June 11, 1930
CAU / CAAU110000August 7, 1930
CAI / CAAI110000October 16, 1930
CAO / CAAO110000February 9, 1931
CAP / CAAP110000April 1, 1931
CAS / CAAS110000June 2, 1931
CAD / CAAD16877February 29, 1932
US, Canadian, and British Model B Engine Serial Number Location

US and Canadian Model B and BB, and British (1932 only) Model AB, ABF, B, and BF serial numbers were stamped on an as-cast pad on the top of the flywheel housing, above the starter as shown in the pic below. The engine block pad was left unstamped and as-cast.

The pic above shows the typical US and Canadian Model B engine number location on top of the Model B or Model 46 flywheel housing, above the starting motor. Note that the number reads from the front of the engine in this example. Others read from the rear.

British Model B Engine Serial Number Location Change

For 1932 only, British Model AB, ABF, B, and BF cars, trucks, and engines carried the serial number (from US Rouge assigned number groups) stamped on top of the flywheel housing, the same as all US, Canadian, and German Model B's.

For 1933 and subsequent production years, British Model B, BF, and Fourteen cars, and Model BB Ford and Fordson trucks and engines again carried the serial number (from US Rouge number groups) stamped on the as-cast pad above the water inlet on the block, the same location as all the earlier Model A's.

For example, the British 1933 Model B, 24 & 14.9 H.P. and British 1934 Model B 'Fourteen' Instruction Books clearly describe that the serial numbers were again stamped on the engine block left hand side above the water inlet.

The serial number relocation from the flywheel housing casting to the former location on the engine block casting was done to comply with British law that the serial number be applied to the engine block casting itself, not on a removable component like the flywheel housing.

German 1936-41 Model B Engine Serial Numbers and Location

German Model B series engines from 1936-41 used an apparently improved version of the original 1932 Model B engine, prior to the implementation of the yet further-improved 1942 G28T 'B' engine having insert bearings and pressure oiling.

The left hand side of the engine block casting often had the Ford script, as well as the 'EB' logo mark of Eisenwerk Brühl, the German foundry that produced the block casting for Ford Köln. The pic below was supplied by Wilhelm Andersen of Norway. The truck is owned by Kjell-Eivind Bastholm.

I am seeking further information and photos about these German 1936-41 series engines, their improvements, and their prefix(s), serial numbers, and format.

German Model G28T Engine Serial Number Location

1942 and newer German G28T (improved Model B) engines were used in Ford Ruhr, B3000, and FK Series trucks (and Claas Mähdrescher combines) through the mid 1950's. The G28T had insert bearings and pressure oiling.

The G28T carried the engine serial number stamped on the pad above the water inlet on the left hand side of the block, the same location as all the earlier Model A's.

In addition, the left hand side of the engine block casting had the Ford part number G28T-6015 and a date code cast-in, as well as the 'EB' logo mark of Eisenwerk Brühl, the German foundry that produced the block casting for Ford-Köln. Also, many blocks had the stylized F-K logo cast-in as well.

I am seeking further information and photos about these German G28T series engines, their prefix(s), serial numbers, and format.

US (Rouge) Model B Engines

Model B 'engine' serial numbers started at 5,000,000 and increased sequentially. The assigned serial number was actually stamped on the (B-6395) flywheel housings of completed engines after they had passed run-in (run-off) tests and were released from the Engine Department for vehicle final assembly. The number pad above the block water inlet was left unstamped on US and Canadian built Model B engines.

The engine (flywheel housing) number then became the serial number for the completed vehicle after final assembly. The serial number is separate from the prefix letter(s). The serial number is unique and is not directly correlated to the prefix letter(s). The prefix is preceded by a ☆, and the serial number is followed by a closing ☆ character.

Rouge Series Model B Ford Engine Serial Numbers
Rouge
Number
Prefix
Starting
Engine
Number
Ending
Engine
Number
DateNotes
AB / AAB50000005000015November 1931
AB / AAB50000165001863December 1931
AB / AAB50018645013187January 1932
☆AB5001874☆Factory stamped number on a (Model) B-6395 flywheel housing
January 1932 number reads from front of engine
AB / AAB50131885032500February 1932
AB / AAB50325015049492March 1932
AB / AAB50494935062386April 1932
B / BB50623875064906April 1932
B / BB50649075087732May 1932
5069693100% Using new style 2-hole intake manifold, May 9, 1932
B5080219Engine number is applied to an original
1932 Model B Kabriolett
Registration Number 562362 in Germany in 1936
5081832100% Using new oil fill pipe, May 25, 1932
B / BB50877335132621June 1932
☆AB5101093☆Dagenham-assigned 'AB' prefix number is applied to an original
Model B Panel Delivery in the UK, Registration Number YJ255
Dagenham-built in November 1932
B / BB51326225144010July 1932
B / BB51440115146668August 1932
B / BB51466695157918September 1932
5147874Engine number is applied to a British bodied
Type AN Model B Tudor built at Asnieres, France
B / BB51579195165401October 1932
B / BB51654025175635November 1932
5175104Begin Counterweighted Crankshaft, December 5, 1932
B / BB51756365179579December 1932
B / BB51795805187129January 1933
5186063First recorded use of pressed-on crankshaft counterweights
B / BB51871305192755February 1933
☆B5187187☆Factory stamped number on a (Model) 46-6395 flywheel housing
February 1933 number reads from front of engine
☆BB5190550☆Factory stamped number on a (Model) 46-6395 flywheel housing
February 1933 number reads from front of engine
B / BB51927565203772March 1933
☆BF5198885☆Dagenham-assigned 'BF' prefix number is factory stamped on a 14.9 HP
R.A.C. Model B small bore block in the UK, Registration Number ANN 20.
Dagenham-built after December 1933
B / BB52037735208842April 1933
B / BB52088435216030May 1933
B / BB52160315227763June 1933
B / BB52277645234547July 1933
☆BB5295660☆Factory stamped number on a (Model) 46-6395 flywheel housing
July 1933 number reads from front of engine
B / BB52345485241341August 1933
B / BB52413425245552September 1933
B / BB52455535248333October 1933
B / BB52483345249669November 1933
B / BB52496705263534December 1933
☆B5261034☆Factory stamped number on a (Model) 46-6395 flywheel housing
B / BB52635355267507January 1934
B / BB52675085275064February 1934
B / BB52750655277589March 1934
B / BB52775905285357April 1934
B / BB52853585287403May 1934
B / BB52874045288942June 1934
B / BB52889435290174July 1934
B / BB52901755292536August 1934
☆BB5317886☆'BB' prefix number is factory stamped
on a 24 HP R.A.C. Model B block in the UK
in a Dagenham-built 1934 Fordson BB Two Ton Truck.
☆B5331574☆Factory stamped number on a (Model) 46-6395 flywheel housing
1935 or 1936 number reads from front of engine
☆B5343498☆Number is factory stamped on a Model B block with 'GS' casting
mark and a Fordson Forward Control oil pan in the UK (John Cochran)
C26 cylinder head casting code, March 2, 1936
☆BB5352975☆Number is factory stamped on a (Model) B-6395 flywheel housing
on a Model B engine Power Unit in Wisconsin (Jerry Parr)
L159 block casting code, December 15, 1939
Cylinder Head casting date is 122939
☆B5356180☆Number is factory stamped on a Model B engine block
with a Fordson Forward Control oil pan in the UK (John Cochran)
L219 block casting code, December 21, 1939
☆AA4854953☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in New Zealand (Justin Bicknell)
☆AA4981139☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in England (John Charlton)
☆AA4981465☆Dagenham-assigned AA number is factory stamped on a Model B block
in an English-built AA truck in England (John Charlton)

Canadian Model B Engines

A limited number of Model B engines were also built and assembled in East Windsor (Ford City), Ontario.

Canadian-produced 1932-34 four cylinder 'engine' serial numbers were actually stamped on the top of the Model B or Model 46 flywheel housing above the starter, and the engine block pad was left unnumbered, similar to US Model B production.

The prefix is preceded by a ☆, and the serial number is followed by a closing ☆ character, and reads from the rear of the engine.

The table below shows the information available from Ford of Canada Historical Archives and Ford Motor Company of Australia Pty. Ltd.

Canadian Model B 'Engine' Serial Numbers
Canadian
Model B
Prefix
Starting
Number
Ending
Number
Date
CBG / CBBG15000Start
April 3, 1932
CBQ / CBBQ / CBBQF13999End
September 6, 1932
☆CBBQFxxxx☆CBBQF prefix used on some 1932-1934 RHD
Model BB trucks/engines exported to Australia.
Number stamped on flywheel housing.
CBW15000April 1933
CBE???
CBR???
CBT / CBTF150001933 / 1934
☆CBTFxxxx☆CBTF prefix used on 1933 & 1934 RHD
Model 40 & 46 cars/commercials/engines exported to Australia
☆CBTF3040☆Factory stamped number on a (Model) 46-6395 flywheel housing.
RHD car/commercial export serial number prefix.
☆CBT3427☆Factory stamped number on a (Model) 46-6395 flywheel housing
in a 1933 Canadian-built LHD Panel Truck

More related information on Ford Garage:

  1. Model A & B German Ford Köln Engine Serial Numbers
  2. Model A & B 'Diamond' Block and Date Code Engine Markings
  3. Model A Industrial Engine Brochure
  4. Model B German Ford Köln Industrial Engine Brochure
  5. Model A & AA US Body Style Numbers & Body Builders Chart
  6. Model A Assembly Plant Body Number Decoder
  7. 1930 Model A Ford Assembly Branch Locations
  8. Model A, B, & Early V8 Ford Patent Plate & Patent Numbers
  9. 1928-40 Model A & B Ford England A & B Powered Vehicle Models Chart

Do you have some interesting Serial Number feature to share?
Please click my name to contact me by email.


updated regularly since:
October 1999

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Ford C600 For Sale

Built Ford Tough.

Ford C6 Transmission For Sale

The 4 speed toploader is one of the toughest manual transmissions ever built.

Identification of the Toploader is easy. Toploaders are top accessible (from a 10 bolt steel plate)

For decoding the specific application look for a metal tab riveted on the right side of the transmission body housing.

HEH-? or RUG-? are the codes necessary for decoding specific transmission application from the

Close and Wide Ratio

2 types of gear ratio are commonly associated with the 60's 70's toploader

Ratio type
2 nd
4 th
2.32
1.29
Wide ratio
1.93
1.00

Ford C6 Overdrive

Ratio chartpage gives a good idea of rpm, speeds and shifting points for both Close and Wide ratio transmissions.

Decoding the Toploader

For most 60's and 70's Toploaders the ID starts with either prefix HEH or RUG

HEH-D

Transmission identification code

HEH-D = 64 390 Galaxie, 1 1/16' input shaft, 28 spline output, close ratio

Transmission serial number
RUG-AV1

Transmission identification code

RUG-AV1 = 70-71 302-351 Mustang, 1 1/16' input shaft, 28 spline output, wide ratio

Transmission serial number

The lower number on the tag is the transmission serial number. The transmission serial number is a production serial number and should not be confounded with the engine serial number, they are not the same. Some transmissions have a date code instead of the serial number.

Input Shaft

2 different INPUT shaft are commonly available for all V8 Ford's, 1 1/16' and 1 3/8'. But both input shafts have the same number of splines of 10.

1 1/16 ' input shaft

1 3/8 ' input shaft

10 spline

Tailshaft

Also 2 popular OUTPUT shafts are available for the V8 toploader a 28 spline or a 31 spline shaft (sorry, no pictures)

Tailshaft housing

Many different Tailshaft housings and shifter positions available with Toploaders.

Transmission

here are a few

Wide transmission insulator mount

C4DR-7A040-A
Narrow transmission insulator mount
Narrow transmission insulator mount
C6OR-7A040-C
Wide transmission insulator mount
Wide transmission insulator mount
C9OR-7A040-A
Wide transmission insulator mount
Wide transmission insulator mount

Bolt patterns (bellhousing)

2 different bolt patterns. Early Toploaders used a narrow bolt pattern type for attaching the transmission to the bellhousing and the later versions used a wider butterfly type bolt pattern.

Narrow bolt pattern

Butterfly bolt pattern

Later type

Toploader exploded view