I'm looking at buying a brand new, never installed Turbo 350 from a guy in a nearby town. It's still on the pallet with the freight plastic and its from Jasper Transmissons in Tenn. It has a 1500 stall and Borg-Warner shift kit on it. He wants $600 for it. If I get it, it's going in an 89 RS with an average 355. Any thoughts or advice on this? Thanks for the time!

i would see if its the long tailshaft(9 inch) th350 ,cause if its not then you will have to figure out something for a driveshaft.may be able to use an 82-83 200r4 driveshaft if you can find one. you may also need the conversion kit too. 700r4 to th350 kit. think it runs like $100

is this going to be driven on the highway? cause you will be giving up your od. Also the 700r4 has a nice 1st gear (3.06 ratio),you would need a 3.73 rear end ratio with a th350 trans to equal it. Then imagine how high your rpms would be turning on the highway with that 3 speed auto and a 373 rear. Its up to you tho,would be fine for the strip.

My uncle and grand father are the ones doing the swap. They've been in drag racing and oval racing for atleast 30 years. I brought up the driveshaft issue and they said not to worry that they were going to do some engineering on it. And it'll be highway driven on occasion.

And my only alternative at the moment, is to rebuild the Turbo 400 that was pulled with the 355. And I figure it'd be close to $600, so the brand new one would have some bonuses.

like what? welding up some extra metal to it to make it longer?

Im curious too... They just say they can lengthen and shorten a driveshaft. I guess it's just some of that random knowledge someone picks up making due in small town racing.

u should be ok,i guess. your car already has a 3.42 or 3.23 gear. its just the rpms will be higher on the highway with a 3 spd