Three speed to four speed

[drtybttr]

I got a 73 plymouth scamp with a three speed manual on the floor. I was just curious if a three to four speed swap is simple and if anyone has done one on a /6 before. If so what are the major components and things needed besides the 4 speed obviously. Any information would be much appreciated.

 

[grumpuscreature]

You already have most of the swap pieces. Check your current bellhousing and see if it is drilled for both transmission patterns. Most of them from '69-'76 were. If it is, all you will need is a non OD tranny, shifter, and front driveshaft yoke from a 727/833. If you want to use an OD 4 speed you can get everything you need from a Volare/Aspen. This would include the bellhousing, clutch fork, transmission, shifter, and front yoke. Good luck with the swap.

 

[chryslerfat]

I have an OD bellhousing in the for sale adds if you are interested.

 

[dustya_383]

i have a non overdrive 4spd for a body

 

[billstickly1]

yes do it, lots of people are doing auto to 4 speed, and this is about 1/4 of that job and is definately worth it, did it in a car a few years ago not a mopar but the four speed was wayyy more fun than the 3 speed, just something about the 3 is wierd... I dunno