try some engine Restore, cant hurt,
whats the pinging from, is the timing screwed up, carb running to rich, is it oil smoke or unburnt fuel???
I dont think pulling the heads will help till you figure out what it is,
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68 SS Camaro LSX/T56 in work, SMD subframe, , DSE Mini tubs, Fikse Profil 13's, Alston G Link, and other parts!! ,
70 Nova SS street racer, ugly,
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