my 89 TA needs a new 305 cause the old ones knockin. i found a guy that has a 305tpi from an 85 TA. do you think there would be any problems with this swap?? your help is appreciated thank you. -bobert-

 

Not really, apart from the different rear main seal.

 

big problems, sort of...

The crank is balanced differently so those two engines use different flywheels. The heads are different so the intakes don't swap either. Your 305 has a roller cam and the old one does not. There are lots of differences but nothing is impossible...

Better to get an 87 or newer 305 (or 350) and drop that in while re-using your front accessory drive and heads / intake combo.

Unless that 85 305 is free or near free I'm not sure I'd go that route. Even if it's free, you still will spend enough money to do it right that you probably could have gotten a newer 305.

 

I wouldn't call those "big problems". The cranks are balanced the same, but the bolt pattern is different so a new flywheel or flexplate is needed. The heads and intakes are different, but the 87 heads and intake can be put on the 85 block.

 

yeah, but then add the loss of the roller cam and...

anyway, I'm just saying that there are so many 305s out there you could start with a better one...

if it's free, take it!!!

 

I wouldn't be too worried about losing the roller cam. The profiles on a factory roller cam aren't so hot anyway. As long as it's all apart you could put in a new aftermarket flat tappet cam and come out ahead. It would be nice to have an aftermarket roller cam in a factory roller block instead, but if it's a budget issue then work with what's available.

 

ok well i was just lookin for and engine to hold me over awhile its my everyday driver. the guy wants 400 for it but it seems like i would have to spend some extra cash to swap it right soo i dont think im goin to go with this one, thanks alot guys, the help is needed.

 

400 seems a little steep for something that you'd only use the shortblock from.

 

yea i didnt realize i had to do all that to it soo i gotta find someone who has an 87 or older 305 perferably to make it easier?

 

You'd want 87 or newer, and all you really need is the shortblock.

 

ok thank you for all the help.