08-22-2010, 11:12 AM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
In addition to your valve notches not being at the proper location for your Edelbrock heads with the size valves you have----the absence of any carbon build up on the remainder of the piston top indicates that you probably don't have enough clearance in the squish area--either the pistons are above the deck or your gaskets are thinner than .047 compressed. Or possibly some pretty severe reversion/scavaging
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