Not Ranked
On 91 octane with that much timing and that much compression...it will ping. Need to drop your compression down to about 10 to 1 ratio and set the timing at around 28 degrees...maybe 30. Pinging is not good....is hard on pistons...hard on everything.
Put a thicker head gasket on it, that will drop your compression some.
Just my thoughts...im sure someone will say im full of it...lol.
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" If it wont break em loose in 3rd gear, it aint enough power "
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