US Engine Codes

[AZmike]

Does anyone know all the A20XX engine codes? I thought that EFI cars always had A20A3 or A20A4 but my block is A20A1. I know my engine was replaced when the car had 25k on it (a few owners ago someone tried running the engine with a really bad oil leak). Could this have anything to do with it? I though A20A1 and A20A2 were carbed blocks. Can someone clear this up for me?

[Jareds 89 LX-i]

This is from the FAQ....

For 1986:

Carbed engines => BS
EFI engines... => BT

For 1987 to 1989

Carbed engines => A20A1 (America) or A20A2 (Foreing)
EFI engines... => A20A3 (America) or A20A4 (Foreing)

Some early 1987 models have the old numbers due to the remaining engines from the previous year.

[carotman]

the A20A1 is a carbed engine.

it will work with efi but has lower compression

[Grant2k]

i have a carbed 1986 and when looking for the engine code, which i thought should be BS, i found A2Q6. What is that?

[carotman]

tranny number

[Grant2k]

i see. so the engine code should be right in that area, right?

[anchovies]

To the right of it engraved to the block not the tranny.