Valve Spring Insight
Thread Starter
Racer
Joined: Sep 2005
Posts: 279
Likes: 1
From: montrose colorado
Valve Spring Insight
Hi All, I broke a valve spring the other day. #1 cyl. exhaust. The spring I believe is a Manley type single spring installed with my Comp cam. The cam has a .580 lift. I would like to get away from this spring and try something else like the 918 Comp beehive. However I was reading about the LS6 valve spring. According to my search of this forum the LS6 spring from the ZO6 (late years) is the same spring as the LS2. These are of the beehive type also. It is reported to be able to handle a max lift of .550. Acording to the Lingenfelter web site they use this spring (LS6)in some of their cam kits and they report it will handle a lift of .580. To get to the point, what do yall think of using the stock LS2 spring with my Comp cam?
Thanks
Thanks
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Why risk it? Get a set of Patriot Gold dual springs with TI retainers for $250 or so. Can't beat the price and folks have had good luck with these for years. And Gunnar at Patriot has the best customer service. I can't recall reading of a case of failure of these springs. I run them on my G5x3 with 600 lift.
Safety Car
Joined: Dec 1999
Posts: 4,148
Likes: 5
From: Roxbury NJ
I have been running .571 lift on my stock LS2 springs since 2005. No issues at all.
I also ran LS6 springs in my C5 with the LPE GT2-3 cam. No issues with that one either.
These are both mild cam engines. If you have a more intense cam, stiffer springs are in order (along with higher pressures, temps, frictions, etc.)
I also ran LS6 springs in my C5 with the LPE GT2-3 cam. No issues with that one either.
These are both mild cam engines. If you have a more intense cam, stiffer springs are in order (along with higher pressures, temps, frictions, etc.)
Last edited by Flareside; Oct 31, 2007 at 10:19 AM.
Instructor
Joined: Feb 2007
Posts: 188
Likes: 0
Just FYI, Comp Cams redesigned the 918 to handle today's more aggressive lift and lobe design. The new springs are silver in color as opposed to black as the old ones were. If you do go with Comp 918's, make sure they are silver.
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Racer
Joined: May 2001
Posts: 304
Likes: 0
From: Bryn Mawr PA
MTI's Stealth II. On my 99 FRC, combined with Kooks LT's, this cam resulted in 380HP to the rear wheels with great drivability and low end torque. Unfortunately, sold the car a while back but the new owner tells me he is turning 11.8's at 119mph which is pretty good IMHO for a stock heads ride.
