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detonation?

May 27 2008 at 4:38 PM		Bill  (Login billinstuart)


Response to Works for me
Early Chevy heads need a close "quench" area to create turbulence in the chamber. The distance from the piston top to the flat area of the head should be 0.040 or a little less. This turbulence helps prevent detonation, and requires less ignition lead. Make sure there are no sharp edges in the combustion chamber. With a slightly fat mixture and not too aggressive timing (30 degrees @ 3000 rpms) you should be ok with 89 octane. You can't hear detonation.

 
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