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Old 03-09-2019, 10:15 AM   #3
parish8

 
Drives: 17 SS a8
Join Date: Feb 2010
Location: omaha
Posts: 1,678
v8 here. at 20psi I was getting spark blow out at .028. I took them all the way down to .020 and that fixed that problem. then above 6500 rpm I was getting a hard miss and that was valve springs. I had good springs but they were not installed at the correct height. once they were shimmed properly that problem went away.
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dropped a valve in the 6.2. now running a drop in rods and piston 5.3
best et 5.83@121 with the 5.3 http://www.camaro6.com/forums/showthread.php?t=465472
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