munson1578

I have a problem with my 3 speed manual transmission(1964 1/2 with a 260 eng) and have found a used transmission from a 1965 with a 289. Both are 3.03. Mine is a HEF BB and the other is HEF BK. Are these interchangeable?

Starfury

I was under the impression 3.03's didn't get put on Mustangs until '67. Somebody correct me if I'm wrong.

Sal Gerace

do you have the hef bb trans and is it for sale??

imp

From the '65 Mustang Ford Shop Manual:

"The 2.77 three-speed transmission is used in all models with a 144 or 170 CID engine."
"The 3.03 HEF Model three-speed transmission is used on all models having a 260 or 289 CID engine."