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Help vortec head swap engine doesnt run right

Vortec head swap on 1990 tbi using sumit vortec intake and 062 heads with the stock tbi, it just doesn't run right it idles and everything but when you go to drive or rev it will backfire and have no power, keeping your foot steady it will buck untill your speed evens out absolutely gutless...
- rotarymedia
- Thread
- Apr 17, 2024
- Replies: 8
- Forum: Engine Performance + Maintenance
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Rebuild or not bottom end 350 tbi

Hello, I have a 90, 350 tbi with 104k miles, it's my daily and I'm trying to get 300-350 hrsprs without runing premium gas, i know its not the most ethical idea and i now all the problems that come with. I already have a set of vortec heads, and shorty headers(cracked manifolds). I'm trying to...
- rotarymedia
- Thread
- Feb 16, 2024
- cam kit engine performance engine rebuild
- Replies: 11
- Forum: Engine Performance + Maintenance