1979 200 3.3 V6 Transmission Swap [Archive] - El Camino Central Forum : Chevrolet El Camino Forums

: 1979 200 3.3 V6 Transmission Swap


35fordrat
04-02-2010, 07:30 AM
I want to swap my TH 350 for an over drive. I have searched and read that a TH200 is the same length as a TH350. Any advice on the swap will be great!! I know that i will need get a kit inorder to hook up the TV cable. What about the lock up? From what I understand, the TH200 does not require a computer to control the lock up like a TH700 does. Will I need to modify the internals of the TH200 in order for it lock up correctly?

Any advice on the swap is greatly appreciated. Thanks guys...

old_coot
04-02-2010, 08:02 AM
The TH2004R is the same length as the th350 (are you sure you have a th350, more likely th250 with the little six but still the same size so no matter) but the mount is something like 6 1/2 inches rearward so the crossmember will need to be moved...the lock up converter will need to be wired up also, lots of folk wire them through a vacuum switch so it will unlock under acceleration....several diagrams in here just do a search and yeah the throttle cable is critical so do your home work there.......Dan