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Video!!! My GTP vs 87 firebird



When I was in college... the first time... I had a bone stock '90 miata 1.6 liter and my roomate had a 3rd gen camaro with a 305. From a stop, from a roll, didnt matter he lost to the miata every time lol.
 
miata weighs an ounce and had 120 horse. 3rd gen 305s can come with as little as 145 HP at the crank and have to push 3000-3300 lbs.

343hp 305

it can make power... in 1990 the 305 put out as much as 230 from the factory. That might be a tad more comparable.
 


actually in 86 they started making provisions for roller valvetrain, and installed them in 305's in like 88 or 89...my monte ss had the provision casted, but flat tappet installed...either way, the carb'd 305's were garbage...sounded good with flowmasters and thats about it. my buddy had one with a holley carb on his and a better hei distributor, with some 3.73s, it was still slow. but his car was clean!!
 
New top end on those 305's will make 'em fast-ish.

Might as well build a 383 though, 500 N/A horsepower is a little more than most should have...
 
My first car was an 84 Trans Am with a 305 and computer controlled carburetor, it was a piece of **** for racing, couldn't beat almost anyone. My city is at 1550 meters over the sea level and it pulled mid 17's on the 1/4 mile. Then I built a 383 stroker for it and crashed the car like 3 weeks later... LoL. My next car was an 85 Trans Am with a 305, but with TPI. That really made a big difference, that car pulled high 15's on the 1/4 mile and was very a decent street racer, the only mod I had was an Accel distributor and I threw away the cat and stock mufflers.

As far as I know, 88's and later ones had a roller cam, and the GM TBI was always crappy IMO and it was a cheap alternative to full EFI by GM.
 
you shoulda pulled your 383 out of that junker and slap the tpi on it, with bigger injectors and let that thing scream!
 
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