A quench of 0.039 is a touch to tight for me, I favor a quench in the .042 to .045 range.
The Vortec head is a fast burn design, allowing for more spark advance compared the pre-Vortec factory heads.
dave w
A quench of 0.039 is a touch to tight for me, I favor a quench in the .042 to .045 range.
The Vortec head is a fast burn design, allowing for more spark advance compared the pre-Vortec factory heads.
dave w
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