Magnum Swap Transmission Options
hello all!
I am considering doing a magnum swap in my 65 Valiant from my slant six and am wondering what I should do for a transmission. I plan on converting to a carburetor set-up to keep things simple. I am not looking to race the car; I just want it to be fun to drive. I know that I can make a 904 or a 727 work but are there other options that might be better? I would like to keep it automatic. Thanks!
Depending on how the body differs from the Dart there are a few choices.
I am running an A500 (42RH Overdrive) out of a Dakota pickup in my Dart and it is real nice to have those gears.
It also bolts right up to Mopar small blocks, and as long as you use the Magnum flex plate the A500 goes right in with very minor tunnel mods (no cutting of the actual tunnel)
It's also possible to make the OD and lockup work completely automatic, meaning no having to flip switches.
Either purchase a shift controller for it (which I found kind of pricey) or it can be done with pressure switches like I did.
There is also a 2004R GM trans that they make an adapter to install, but the 200 would require some beefing up to last well behind a Magnum.
Then there's the 7004R GM which is the heavier version automatic overdrive.
The A518 (46RH) is the overdrive version of a 727 and almost definitely would require some floor cutting.
A modified trans cross member would be required for any of the above, as well as details like cooler lines, linkage setups and throttle pressure.
There's some food for thought and research for you to get started. :D
