will a c-4 out of a 70 model fit my 66 289 or will i have to change driveshaft lenth. i have a 6 bolt bellhousing. will i need a small bell housing trans or a big bell housing trans. its all factory with a green dot c-4 cruise-a-matic .
Pan fill was the 69-later 164 tooth bell C-4 also referred to sometimes as a C-5. This is a heavy duty unit used in the bigger cars, trucks and vans. There were 3 size flexplate C-4's, 147 (Mustang II only), 157 and 164. You want the 157 tooth case fill transmission. I'm not 100% sure but you're present bell should fit it. If someone else knows, speak up.