Where are the engine numbers located on a 66 389 GTO
 

What do you look for to check your engine numbers? Have a 66 GTO 389 would like to know where the engine numbers are located and what they are suppose to match?

The passenger side front of block under head is the Engine Unit Number (6 digits) below that is the Engine Code.

On back of block passenger side is a block casting number.
On back of block by distributor is a date casting number.
No partial VIN on the 66 engine.

Find those and report them here.

My website may help also:

Engine Code Search

:)

Hi John,
Thanks for the reply. I'll see if I can find them,Thanks,
Fred