How to Find out the Engine ID Number?

by Troy
(Riverside CA ,USA)

Question:

I need to find out if my heads are a 4 barrel or 2 barrel.

The reason is is I'm getting a new carb and want to make sure I get the right one. It's a 1971 Mustang with a 351c engine.

Answer:

Your VIN code (vehicle identification Number) is the place to find out which engine is in your 71 Ford Mustang.

Here's a breakdown for the 1971 Powerplants:

Engine Code and Size:

C
V8 429 CID 4bbl Cobra Jet
F
V8 302 CID 2bbl
H
V8 351 CID 2bbl
J
V8 429 CID 4bbl Cobra Jet Ram Air
L
I6 250 CID 1bbl
M
V8 351 CID 4bbl
Q
V8 351 CID 4bbl Ram Air
R
V8 351 CID 4bbl Boss

Want more detailed information for the 71 Mustang? Click here.