350,383,406 whichever will put smiles on your faces, personally I’d stick with just a good running Vortec 350 and 2004R
Welcome to OldChevelles.com, built by Auto Enthusiasts for Auto Enthusiasts. Cars are not our only interests so please feel free to post about any subject the community might enjoy or you just feel you need to air.
We respect free speech and constructive dialogue however we don't allow threatening talk against members, nudity, or pornography. Threads are monitored and trolls are not tolerated.
This site is completely free and there are no costs. Please enjoy and provide feedback.I’m not a guy who knows anything about transmissions but is there any chance the leak isn’t catastrophic? A leaking seal or something that can be replaced?
If I were to sell it I’d be tempted to get a used TH 350 or 400, swap and sell the original trans with it. I think selling it non operational, paying big bucks to have the original trans fixed, putting in a OD trans or even a premium, new/ fresh rebuild 400, you’d not recoup your investment.
Another option is LS, they’re pretty hot right now but again Expensive to do right, my work partner has a 63 Chevy II Nova vert with a crate 350 & T350 he also wants to go OD trans
Try to find a Grand National 200R4, they are beefier.
200-4r's aren't cheap to get built, seem like most reputable builders are over 3K to do one.
I see Extreme automatics does one for 2500.
Late 80's I had a T350 behind a 1970 467 putting out around 525? hp and no problems, never really got traction though, 327 & T350 sounds like a great combo for the Starfire just save the original parts for the next Guy/Gal,,,,,I didn't mean that in a Liberal way, Guy OR Gal