what do you thank about a 305 with a twin turbo


Asked by Apr 30, 2014 at 09:19 AM

Question type: Car Customization

i was thanking about putting a twin turbo on my 1983 trans-am 305 stock what do you

3 Answers


You can get a 350 crate motor for what it will cost to do the turbo install, and it will make more HP and torque. Worse yet, the 305 has a weak bottom. I wouldn't do it. That said, if you're hell-bent on doing it, you'll need to have the 305 heads worked on to take advantage of the increased flow, or it will be pretty much a wasted effort. The 305 heads are lousy. With port and polish, and twin turbos, you might squeak 275 HP from the thing before burning a hole in the cast pistons. A bone stock 350 makes 290 and will last 100+ years.

2 out of 2 people think this is helpful.

the 305 won't handle the turbos. go with a 350 for a starting point.

Best Answer

ok thanks

Your Answer

Add photo

Related Questions

  • turbo? 3 answers

    so i have a 1976 trans am 400 what i was wondering is if somebody can tell me what turbo or what size turbo to get for it because i have enough torque in this car for take off so iam looking for top e...



    Car Customization

  • I know this probably sounds dumb but is it possible to put turbo on the 3.4 V6? If so, what or how would I do it? 1 answer

    I was really surprised at how quick this bird moves with the V6 in it and I do like the looks it gets. Mine is purple and it jsut sort of stands out. It has 133000 miles on it now and I would either l...

    1995 Pontiac Firebird Base


    Car Customization

  • V6 5 answers

    I have a '96 Firebird, thats rite just Firebird, not Trans, meaning it only has a 6 cylinder. I know I know get an 8, and someday I will. Besides I like a good challenge of making a 6 cyclinder smoke ...

    1996 Pontiac Firebird


    Car Customization

  • turbocharger 12 answers

    Can you turbo charge the 3400 and how much does it cost to do it?

    2005 Pontiac Grand Am GT1 Coupe


    Car Customization

  • production numbers 2 answers

    how many were produced with turbo & manual trans

    1990 Pontiac Sunbird 2 Dr GT Turbo Coupe




Looking for a Used Pontiac in your area?

CarGurus has 14,365 nationwide Pontiac listings starting at $799.


Search Pontiac Questions

Pontiac Experts

#1 tenspeed
Reputation 11,050
#2 Tom Demyan
Tom Demyan
Reputation 8,500
#3 Js08016
Reputation 7,780
View All