Pontiac - Street No question too basic here!

          
 
 
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Old 01-28-2009, 02:20 PM
Mr. P-Body Mr. P-Body is offline
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Join Date: Aug 2004
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The multi-valve relief pistons may "fit" but they are a poor choice if a quality build is what you're after. We use the L2262F (std.) and "dish" it with a simple dish of 16 CCs (3.25" x .100").

Larry has obviously not used the XE cams in lower compression applications. They hardly "suck". We use XE262H as a "replacement" cam for any application where 10:1 or higher and an 068/744 cam would have been used, once static compression has been reduced to below 9.5:1. Our 600 HP (93 octane) street packages use XE solid rollers.

NOTE: All changes made to reduce detonation without reducing compression will not accomplish the desired goal, and WILL reduce overall performance. While it may be "possible" to super-tune it to run well with a higher ratio, it's not real practical. Perhaps Cliff will stop in here and explain the details necessary to do it. He's more capable of it than anyone else I know. Unless one is "pressing the edge", the potential problems and comlpexity far out-weigh any gains.

Jim

 


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