[equalizir]

HI guys, Im new to the forum and this is my first post. I own a 1965 Mustang. It has a 200 straight 6 motor. I currently have a c4 3 speed transmission. I would like to change the transmission because when Im on the freeway the motor is at high rpm. One of my buddies told me I should swap in a tranny from an '86 t-bird. I would like advice on the best tranny to use. Thanks in advance.

[mark1152]

I am not sure about the mounts but if the c4 has six bolts on the trans to engine bolts a aod from just about anything should bolt up. I had a 200 in my 65 but that was 20 years ago so I don't remember exactly. The tranny first got bolted to a 250 six, then a couple years later to a 302. Then a aod out of a 82 mustang went in.

[sixtsixstang]

Welcome to AMF. You should find your anwers here.

[Joe Bean]

It might be a lot easier to change the rear end gears than to try changing transmissions.

Do you know what ratio your car has in it? If it is still stock, you could determine the ratio by the information on your driver's door tag.

Go here for more info:

Classic Mustang Dataplate Decoder