1980 pontiac trans am question
#1
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?
#3
Re: 1980 pontiac trans am question
Originally Posted by Mista Bone
forget the turbos, drop in a 6.6L NA and go faster.
#6
Re: 1980 pontiac trans am question
Originally Posted by D16y7DX
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?
#7
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?
#8
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
#9
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.