The pre 62 autos used a separate bellhousing which had to be dialed in to the torque converter hub when removed or the converter changed. The converter mounts directly to the crank. then the bellhousing to the bloc. per the FSM you heat the front of the converter to get it within spec which is +/- .0015 or .002. It's a trial and error until you get the hang of where and how much to heat> BTW you wont find this info in the trans section, it's at the back of the engine section. AMHIK. Failure to do the above will typically take out the front bushing in a short time. I'm also not sure if the bellhousing to block bolt pattern is the same
Should you really want to pursue this idea here's a pic of the front of the trans and I'll say you have bigger "cajones" Than I

You ain’t kidding😬. I guess all I can hope for is to be able to work with the original engine and try to get it running right. I really want to retain the push button functionality of the transmission.

Is it a 2 speed Powerflyte or a 3 speed torqeflyte?

Give us an update when you get the car.

Imperial Services makes a kit to use your pushbutton shifter with a newer trans. At the bottom:

http://www.imperialservices.net/Cparts.html

I have a friend who bought one of Imperial kits for using a GM250 O.D. tranny behind his M.W. 1963 plymouth, it wouldn't work so he sent it back to them.
He waited a long time after ordering it and to get it and then it wouldn't work

They don't even list a kit for a GM trans. It's not claimed to be universal.

I’ll post some pictures when I get it home Saturday 🤞

Thanks for the link. I see they are out of stock. I’ll have to call them up about when they can make more.

According to him they sold him the kit saying it would work and it took forever to get. I wonder if they were developing it after he made his order.
He ended up getting another brand that does work
My message is be careful when dealing with them

Here’s a pic of the car. I posted more pics on the general forum.

Beautiful car!

Thanks guys

wow!!!

what's wrong with the 361 ? ( aside the lack of available pistons for them ).

If you have a nice 383, just go find a newer 727, mate them up and put them in together. That of just get the 361 running as best you can and drive it until it fails.

dam that is sexy.

I've been told a '65-only 727 will work with a later 383 and the pushbuttons, because of the compatible "rooster comb" still in use that year.
2 guys that should definitely know from experience have told me that.

The pre-62 transmissions are a different trans altogether and do not have a park mechanism relying on a brake band mounted to the back of the trans instead. One may be able to make something work but it's not going to be a plug and play deal. May be more information on the Forward Look site

the 65 only transmission works with the 62-64 pushbutton with the park lever.
it is desirable because it has a slip yoke instead of the ball and trunnion u-joint, while still using the two cables necessary for the pushbutton shifter.