918 comp cam springs
10-05-2009, 07:44 PM
#2
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Right from comp's website, which you also have access too....
"DESCRIPTION:
The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams® has developed a process that creates the highest quality Race Valve Spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.
• Designed for hydraulic roller cam
• .625" maximum lift, 1.310" O.D.
• Designed for LS1, LS2 and LS6 engines
• Will work in 5.7L Hemi engines with Part #761 or #762 retainer, as well as many other engine combinations"
http://www.compperformancegroupstore...Category_Code=
"DESCRIPTION:
The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams® has developed a process that creates the highest quality Race Valve Spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.
• Designed for hydraulic roller cam
• .625" maximum lift, 1.310" O.D.
• Designed for LS1, LS2 and LS6 engines
• Will work in 5.7L Hemi engines with Part #761 or #762 retainer, as well as many other engine combinations"
http://www.compperformancegroupstore...Category_Code=
10-06-2009, 07:24 AM
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It depends on what install height the springs were set. That spring has a coil bind height of 1.100" and you should have a minimum of .060" clearance before coil bind. So if you do the math: 1.100 + .060 + .615 = 1.775". If you install height is 1.775" or taller, you should be able to run that spring with .615" lift.
10-06-2009, 12:21 PM
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I believe they are rated to .625 now. I would run any cam about .590 and up on a double spring personally.
Last edited by 01ssreda4; 10-06-2009 at 06:29 PM.
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10-06-2009, 03:03 PM
#8
You need more seat and open pressure with that much lift....run a dual spring for better results and more peace of mind.
If a single spring breaks (and they do break) you will be SOL and potentially looking at a complete rebuild if you drop a valve.....its never pretty when that happens.
-Tony
If a single spring breaks (and they do break) you will be SOL and potentially looking at a complete rebuild if you drop a valve.....its never pretty when that happens.
-Tony
