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Maximum RPM on stock bottom end LS2?

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Old Feb 26, 2007 | 04:38 AM
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Default Maximum RPM on stock bottom end LS2?

Assuming an upgraded valvetrain, what is the maximum RPM possible for a stock bottom end LS2? Can it safely rev to 7000 RPM with the factory cam? Assuming you upgrade pushrods, roller rockers, springs, and titatium retainers, how high can you spin the engine without worrying about blowing the bottom end? Thanks!
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Old Feb 26, 2007 | 11:32 AM
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7200, would be about all I'd ever push an LS2, I wouldn't push it.

ARP bolts in the bottom end would be peace of mind though.
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Old Feb 26, 2007 | 12:53 PM
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There is no point in spinning a stock cam to 7,000rpm. It stops making power around 6500rpm I would imagine. You need a cam that is designed for that RPM range and can take advantage of good flowing heads/intake.

Also you need upgraded rod bolts in the shortblock if you want it to last. I like Katech (A1) rod bolts.
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Old Feb 26, 2007 | 01:22 PM
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I've got a Procharger on there too and the last dyno run showed power still increasing at 6600 rpm.
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Old Feb 26, 2007 | 05:15 PM
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stock cam peaks at 6k.
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Old Feb 26, 2007 | 05:29 PM
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Boost is still increasing above 6000 rpm, so there is more power to be had as the blower spools up all the way. With the Procharger, peak boost is at peak rpm, which I believe is north of 6600 rpm.
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Old Feb 27, 2007 | 05:53 AM
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cool, well as is, I really wouldn't go more than 7k. I'd imagine your power levels would go thru the roof with a larger cam in there to compliment that blower.

how much did that blower run you? if there were any power adder I'd add to my goat it'd be a procharger or an STS
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