valve spring issues?

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Feb 11, 2004 | 03:01 AM

hightest

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Pro

Joined: Sep 2003

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From: Calgary Alberta

valve spring issues?

I was just wondering if anyone has ever had any problems with their stock LS1 valve springs. I've been told by a few people that they are pretty weak and prone to valve float.
Is there any truth to that rumor?
Please chime in if you've encountered or heard anything.
If so, any suggestions on springs for mild upgrades would be great.
Thanks.

Feb 11, 2004 | 08:38 AM

Mitch C

Melting Slicks

Joined: Jun 2001

Posts: 2,743

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From: Davie Florida

Re: valve spring issues? (hightest)

I have not heard of any problems with the stock valve springs with the stock cam provided you are not reving the engine beyond 6K. If you are going to upgrade your cam plan on installing good valve springs like the Crane duals or the Comp 921 duals.

Feb 11, 2004 | 09:58 PM

MC TORCH RED

Le Mans Master

Joined: Jan 2003

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From: houston texas

Re: valve spring issues? (Mitch C)

:iagree:

Feb 11, 2004 | 10:01 PM

davidfarmer

Race Director

Joined: Sep 1999

Posts: 12,422

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From: CONCORD NC

Re: valve spring issues? (MC TORCH RED)

The LS6 springs are very good. We run them up to 7500rpm, with a fat cam, and have never had a problem.

Dave

Feb 11, 2004 | 10:04 PM

Mopar Jimmy

Team Owner

Joined: Apr 2001

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From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower

St. Jude Donor '06

Re: valve spring issues? (davidfarmer)

DAVIDFARMER:

That's great to know. Out of curosity are the LS6 springs a single or dual spring? Also, congrats on a very nice write up about you and your C5 in a recent corvette magazine article i subscribe to and recently read!!!! :cheers:

[Modified by MTI 427 Roadster, 4:16 PM 2/12/2004]

Feb 12, 2004 | 04:57 PM

hightest

Thread Starter

Pro

Joined: Sep 2003

Posts: 731

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From: Calgary Alberta

Re: valve spring issues? (davidfarmer)

Thanks for the tip,
The LS6 springs are much more cost effective over other spring sets.

Feb 12, 2004 | 05:00 PM

Tony @ MPH

Supporting Vendor

Joined: Jul 2003

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From: http://www.mphparts.com 800-364-1975

Re: valve spring issues? (hightest)

A few guys in the FI forum have had issues that were resolved when they went to Z06 springs. I am having high RPM power loss with my blower and have ordered Z06 springs to do the swap too. Not yet sure if it will resolve my issue.

Feb 12, 2004 | 05:40 PM

CJS

Melting Slicks

Joined: Mar 2001

Posts: 2,349

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From: New Milford CT

Re: valve spring issues? (diynoob)

I am running stock 2002 Z06 springs and light valves with a Thunder Racing 220/553/114 cam. 10,000 miles now, many quarter mile runs, no problems so far, red line is 6500rpm, I go there often. My goal is 100,000 miles on this set up.