[ericsorge]

289 c 66 12
6-g 235-t

[Veronica]

Hello That's a 289 built in Cleveland for a 66 model car with change level 12 built in july of 66 for a C code car. Hope that helps.

[MustangJim]

I just bought a 66 Mustang with a 289.

Wher did you get those numbers? I assume they came off of the heads, but, where are they located on the head?
Just curious!

[Veronica]

Hi again. Ford put a metal tag with that info on the motors. It is bolted to the top of the intake over on the driver's side on a 66. Usually, that tag is long gone, but you do see them every so often. Actually, a lot more often than you would think. Hope that helps.