My 4 pinion lasted longer than expected when run with a diff girdle……that being said, after getting into the 1.5x 60 foots on slicks it blew up the ring and pinion gears. Never had a problem with the axles.
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile
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