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Boosting a LS3?

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Old 10-11-2009, 11:53 PM
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Default Boosting a LS3?

What do you guys think, will this be safe? I plan on buying a brand new LS3 block. Basically it will be the stock 4.065 bore with a 4.000 stroke, 415CI

I have a "around" 800rwhp goal, I also have a SDCE upgraded F1A Procharger thats going on this motor, I am guessing 15-17PSI to get my HP goal.

Shouldn't be any worries with this block right? Or should I worry about, warping sleeves, block flexing and crap like that?

Please help me decide what to do guys.
Old 10-12-2009, 06:55 AM
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Anyone?
Old 10-12-2009, 10:49 AM
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What heads?
Old 10-12-2009, 12:09 PM
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ls3 block is a pretty good piece,i have built a couple of them that was north of 1000rwhp with no issues.A proper hone is critical on the ls3 blocks though,i have fixed several of these due to oil consumption issues.
Old 10-12-2009, 02:45 PM
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Originally Posted by Pro Stock John
What heads?
I was thinking that TFS 235cc. Good choice for me?
Old 10-12-2009, 02:46 PM
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Originally Posted by Shawn @ VA Speed
ls3 block is a pretty good piece,i have built a couple of them that was north of 1000rwhp with no issues.A proper hone is critical on the ls3 blocks though,i have fixed several of these due to oil consumption issues.
Well luckily all we build at our engine shop is race engines for the roundy round dirt track here in OKC. Not the same engines, but still having it built the Right way shouldn't be a problem. Plus I am starting with a brand new block, so that should help I think.

So, those heads a good choice?
Old 10-12-2009, 04:07 PM
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TFS heads are pretty nice, you just can't run stock rockers with them. I ran some fairly cheap rockers with a set of TFS 215's on a smaller engine.
Old 10-12-2009, 06:01 PM
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Originally Posted by Pro Stock John
TFS heads are pretty nice, you just can't run stock rockers with them. I ran some fairly cheap rockers with a set of TFS 215's on a smaller engine.
I don't plan on having very many stock parts on this motor in the end lol. Maybe the oil pan.



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