Sound's like the vac can is giving it too much advance and its pinging badly? I would limit it down to arount 10-14 degrees, so you end up around 40-44 total
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Darby
74 Grandville 2Dr 455 c.i 4550#
2011 1.60 60 ft, [email protected]@117.74
2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, [email protected] [email protected]
M/T 275/60 ET SS Drag Radial
2024(Pontiac 505) 1.25 60 ft, [email protected], [email protected].... 275/60 Radial Pro's
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