1980 pontiac trans am question
 

Okay I bought a 1980 305 trans am with plans to twin turbo it homemade style, do a custom exhaust with the car gutted. I plan on hopefully putting out around 350 horses and 400 lbs/ft. I would like to if possible run mid to low 13's with street tires and the stock auto tranny. Is this a reasonable horsepower goal or are my sights too high for a stock motor besides the turbos? Also are the turbo's from the 301 turbo trans ams any good does anyone have experience with them? And can I just rotate the turbo on the stock turbo manifold from being a right hand manifold so I can put it on the left side instead?

Re: 1980 pontiac trans am question
 

forget the turbos, drop in a 6.6L NA and go faster.

Re: 1980 pontiac trans am question
 

bone is true on that statement. even a 454 will be good for that TA. im actually putting mine back together to sell it, but keeping my built 350 thats in it. a 350 will wake the car up for sure. the stock high output 305(as they call it) only makes 195 hp i believe from the factory. you can tt the thing, but wont be that great of an engine once all is said and done. thats why i said bye bye to my 305.

Re: 1980 pontiac trans am question
 

mild built 355's put out 350hp.............lol

Re: 1980 pontiac trans am question
 

Poncho 301 was a joke, a really bad one at that!

Re: 1980 pontiac trans am question
 

The 301 manifold will not bolt on to your 305 because your 305 is a chevy motor and the 301 is a pontiac motor. You will need to use either your stock manifolds or make some headers work. There are plenty of other turbos that are alot better than those 301 turbos. You should be able to get some good condition t3 turbos for cheap.

Re: 1980 pontiac trans am question
 

guys I have thought about the 454 but I wanna see how much power I can push from this 305 for cheap until it blows up or until I get greedy and start going for more power. This is a straight drag car. The only thing is I really wish it was manual but that is something I won't fool with til I do swap the motor. Your probably right the t3's would work way better for this motor and push more cfm than the turds they put on the 301. As for the manifolds not bolting up this is a pontiac motor. Pontiac offered the 301 turbo, 301 n/a, and 305 that year in the Trans Ams why they would offer 3 different variations of the same motor is beyond me but hey whatever. No matter what motor I do end up with in the end it won't be N/A I decided that a long time ago. And stupid question but I have yet to ever doa twin turbo setup but when running an intercooler can I weld like a y-pipe on one side of the intercooler so the air from both turbos goes in one side than run one 3" pipe out to the intake manifold?

Re: 1980 pontiac trans am question
 

yes you can do that idea with the intercooler. You can also buy dual inlet/outlet intercoolers too, just do whatever way will make routing the piping easiest. And the 305 might not make much power, but they are pretty stout engines and run pretty much forever if you take care of them. Give it a whirl with the 305. Any turbo setup you build for it would be a direct swap onto a 350 if you decide to go with a swap later

Re: 1980 pontiac trans am question
 

true that. Best part of the chevy small blocks parts swappability. I think I just made up a word. yeah this motor has only 78,000 all original miles so I'm guessing it is a good turbo setup for now. I don't know why but I would love to stick with the 305 even if I build one up from one of the newer camaros with the fuel injection and then swap it in and throw the kit I build on there. I have a buddy who has a 93 firebird with the 350 and 6 speed gear box, he might be selling it soon and told me that he would give me a discount if let me him help swap the 350 and 6 speed into my car.

Re: 1980 pontiac trans am question
 

better yet sell it and buy a crx :y