Some people intentionally prefer slightly larger clearances, it makes up for 'not perfect' machine work, and kind of depends on how good a machine shop you use is. 'Not perfect' tolerances can stack up quick and catch even good builders off guard.
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1970 GTO Judge Tribute Pro-Tour Project 535 IA2
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1971 Trans Am 463, 315cfm E-head Sniper XFlow EFI, TKO600 extreme, 9", GW suspension, Baer brakes, pro tour car
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