Valve springs for boosted LSX ?

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Nov 18, 2010 | 10:00 PM

#41

racer7088

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From: Houston, Tx.

Heavy parts kill everything. We have a certain LS7 head here with 144g intake valves! I won't use them. Everyone is giving good advice and like Shane says the ETP and heavy stuff needs more spring pressure to work right.

I like the Manleys and the K800 that Brian showed us too for their respective lift ranges.

Nov 18, 2010 | 10:01 PM

#42

SSLSX427

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From: Langley B.C

not to high jack this thread i have the LSX-LS7 gmpp heads ti intake sd ex on a 427 LSX boosted never ran yet as im wanting diff springs than the ones the heads come with what would be the best spring for this combo be, cam is a TS ls7 grind .656" lift
hyd caddy lifters if i remember

Nov 18, 2010 | 11:29 PM

#43

qqwqeqwrqwqtq

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From: WWW.SPEEDINC.COM

Quote:

Originally Posted by Brian Tooley

If running boost, get a slower cam lobe, like the Comp Extreme Marine or something slow and stable. When running a hyd roller cam with boost, high RPM stability will buy you more top end horsepower than all of the ramp speed in the world...

Agreed.

Also, not sure why more people don't use the PSI CT1225's. They are a bit pricey but their low rate is perfect for high seat pressure without getting crazy over the nose.

Nov 23, 2010 | 06:49 AM

#44

denscor

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From: West Virginia

Nov 23, 2010 | 07:33 AM

#45

TurboBuick6

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Quote:

Originally Posted by SSLSX427

If your running Ti intakes you should be able to run the 1521 no problem. I hear a lot of hype about these cts-v lifters but are they really that good? Seems like they cannot handle over 500lbs without bleeding down.

A lot of people are running cams so agreesive 500lbs is not enough to control the valves at high RPMs.

Jan 7, 2011 | 09:21 PM

#46

JRsZ06

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What lifters can handle the K-800's from Cam Motion on a TFS 235?

What about an LS7 lifter?

What about a Morel-people mentioned there a different ones-how do you know which one your getting? No link-bars.

TIA.