Need help on durability...
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Need help on durability...
I am currently working towards a blower car setup and my question is how well will a forged bottom end, stock block ls1 hold 12-15 psi from a procharger. Keep in mind appropriate cam will be applied, stage 3 ls6 heads, stepped 1 7/8 headers, and at a 8.5 to 1 CR. A similar setup I saw in person, went for a ride, and saw the dyno put down 671 rwhp through stock exhaust and cats. It was a z06, so less drivetrain loss than a f-body. None the less, there is worry of how long the block will hold that kind of power. Just wanted to know what yall thought.
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at 8.5 to 1 cr 15 psi is a lot of boost. what blower you using? as far as durability goes, you should be ok. if you're worried about it, i know where there is a ls1 stud girdle in houston you could pick up.
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Originally Posted by kickassT/A
at 8.5 to 1 cr 15 psi is a lot of boost. what blower you using? as far as durability goes, you should be ok. if you're worried about it, i know where there is a ls1 stud girdle in houston you could pick up.
Last edited by mnc2886; 12-30-2004 at 01:28 AM.
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i meant that it takes alot of boost to have 15 psi with that low of a cr. i would probably run a set of 6.0 heads unmilled to lower the compression, and put stock cr forged pistons back in. thats what we did on inspector12's car, and it's doing fine.
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I was thinking of doing the LQ9's. I guess 9:1 would do just fine. If I leave the stock crank in, I should still make good power. No point in paying the extra for the 4" crank.