Engine Number

[Bruce of MN]

The replacement for my old cracked block is number AA40119**

Is that a restamp or from an AA?

 

[JayJay]

The replacement for my old cracked block is number AA40119**

Is that a restamp or from an AA?

Likely AA, went through QA in September 1930.

 

[Joe K]

More on the Ford Model A numbering system at https://www.fordgarage.com/pages/ABenginenumbers.htm

Probably more than you'll ever remember, or need to.

Vince is an asset to the hobby for sure.

Joe K

 

[Kurt in NJ]

the AA means the engine got the heavy duty pressure plate with heavy springs and perhaps more springs

 

[Brian SATX]

Is there any way to tell where a certain car was assembled by the engine/frame number?

 

[ModelA29]

Stamped on 10-1-1930. I think all the Model AA and A were equipped with the same pressure plate after Ford dropped the multi disc clutch in early 1929.

 

[ModelA29]

Is there any way to tell where a certain car was assembled by the engine/frame number?

No - If the engine is in the car and the frame matches and you know the body hasn't been swapped and the body was stamped at the assembly plant then you can be pretty sure where it was assembled.

 

[gdmn852]

Hello, some cars were stamped on the center body sill ,where the front seat mounted, with a code of the assembly plant that built it, I looked for one on mine but too rusted to see anything, but it’s a roadster that sat outside a long time. Do a search on FB , might turn up some old posts.Engine number is only when it was built, could be weeks before it was placed in a car , depending how distant the assembly plant was from River Rouge manufacturing.

 

[Bob C]

In February 1928 trucks started getting the same clutch springs
as the car and AA was dropped for A on the truck engine number. In May 1928 the truck started using heavier springs again and AA was used in the truck engine number. In November 1928 the single plate clutch was now standard. The disc for the car was A-7550 and the larger one for the truck was AA-7550.