Anyone install three speed with overdrive behind a slant six
I have a 71 Dodge Demon that has a slant six 225 with a three speed on the floor transmission. I have converted the car to BBP front disc brakes and changed out the 7 1/4 to an 8 3/4 3.55 posi with 10 x 2.5 BBP rear brakes. My question is now I want to convert to a 4 speed but have found a cast iron 3 speed with overdrive transmission. What else do I need? Can I use a regular 4 speed shifter? Hopefully someone has already done this conversion and can help with a parts list.
I have a 71 Dodge Demon that has a slant six 225 with a three speed on the floor transmission. I have converted the car to BBP front disc brakes and changed out the 7 1/4 to an 8 3/4 3.55 posi with 10 x 2.5 BBP rear brakes. My question is now I want to convert to a 4 speed but have found a cast iron 3 speed with overdrive transmission. What else do I need? Can I use a regular 4 speed shifter? Hopefully someone has already done this conversion and can help with a parts list.
