Sinner
Active Member
Hey guys I have a quick question, so can a 1970 3 speed manual transmission, that was married to a 340, marry up to a 68 273?
It should work with the right shifter. I went the other way with a 340 Duster and it was a direct swap as I remember. Check length and output splines to rule out the obvious. Make sure your bell housing has the bolt pattern for the 3 speed.
Early bell housings usually had either the 3 speed bolt pattern or the 4 speed bolt pattern. Get the casting number of the bell housing. later bell housings had both bolt patterns. All bearing retaining bores were small from the factory on A bodies except for the 75 up O/D 4 speeds, that used the large 5 and 1/8 ID bore.Thank you guys. So I have bell housing that went to a 273. Are they interchangeable?
Early bell housings usually had either the 3 speed bolt pattern or the 4 speed bolt pattern. Get the casting number of the bell housing. later bell housings had both bolt patterns. All bearing retaining bores were small from the factory on A bodies except for the 75 up O/D 4 speeds, that used the large 5 and 1/8 ID bore.
Some of the early bell housings are sized for the 9 1/2" clutch, a setup you may want to steer away from!
I wish you'd take a picture of the whole trans, but I'm thinking I'm looking at an 833 Chrysler 4 speed.
Russ.
I've been building stick tranmissions for around 50 years. I still don't know any numbers, I just look, and count teeth. These old transmissions, odds are, aren't original inside anymore anyway.
What I'm looking at is probably a B body, 23 spline 4 speed, and judging by the other picture of the extention housing, it's all cast iron. Just a good old fashion Plymouth or Dodge B body hot rod. The only thing that throws a big question mark to me is the late side cover bolted on it. The trans doesn't have the B body reverse spring and detent on the main case, it's in the side of the case and into the side cover. I don't know what year MOPAR changed. Pulling the side cover to expose the gear set inside would settle exactly what it is.
It's a good trans, but a pain in the *** to get to fit in an A body. You might not like doing the modifications to get it to fit, but it is do-able. There is about a half dozen ratio possibilities it could be if it's a straight 4 speed.
Russ.
Okay I,have a question before I do anything to it since I have 70 4 speed tranny so I current have short main shaft and short style exention housing I plan to do the swap since cant find A body 4 speed tranny to put in 72 318 3 speed so I,am doing swap as 340 4 speed clone on this car .