1940 p10

Wow. This is all really good info. And I really appreciate the different perspectives on this. You have all given me a lot to think about. Thanks again to everyone. I'm gonna look into putting the sbc aside and picking up a local guy who is selling a 318 / 727 combo. I've done so much with ford and chevy, why not dive in with some cool mopar stuff and learn something new. It would be cool to keep it all Mopar, I think I'm gonna add the v8 and auto, and then keep my eye out for a later model mopar rear end. I just got done working on a 49 gmc truck, and the one thing that killed me was trying to find parts and pieces for a rare eaton ho 72 rear end. I ended up getting a late model dana 70 (it's a 1 ton) and haven't looked back. And I plan on driving the plymouth, not looking at it, so serviceability is key. I'll keep everyone updated with the project. I tend to get a little "obsessed" once I get a new project, so there should be lots to report. Thanks again to everyone on the site for the thoughtful replies. Brad

Will do. Good to know. A "not super invasive" solution is good. I'm not sure I would outsource another sub frame at this point. The nova just happen to be a really good deal, and I would rather not spend the money if the factory foundation is solid. An I'm not too worried about the lack of parking brake. I was concerned the factory rear axle would be hard to find replacement parts for, but after doing some quick research, it seems there are things like wheel bearings, and seals available through my local parts stores. You guys are giving me great info.

Lightly modified sbc. Something to romp on a bit around town and do the occasional short road trip. I have been considering the sub frame swap. Sounds like I should buy the nova and do some modernizing. Thanks again for your input. Very valuable feedback.

Thank for quick reply. I plan to hot rod it a bit with a V8 and a th350 trans. I have access to a driving 77 nova with a straight 6 and auto trans (i plan to use this trans, but different v8). So im wondering if the stock rear end in the p10 should be replaced giving my intentions to hot rod it a bit, and put some miles on it? Or should i plan on swapping out the diff with the nova donor? The track width is near identical. I understand the pearches will have to be relocated. Thanks again.

Hello all, This is my first post on this site. I just purchased a 1940 plymouth p10 4 door sedan, and I have a couple questions. I am having a hard time finding the name of the stock rear differential? I have found every part, shop manuals, etc... But cannot find the model or name? And what is the general perception of these diff's? The guy I bought the car from has a junked 77 nova that I could buy the rear axle from, but I want to know more about the stock unit before i assume i need to go later model. Thank you very much to everyone in advance , Brad