I have crower 68405 springs and aftermarket lock retainers seals and o rings heads are unported. could I get a bigger lift cam or use 1.65 rockers with out braking factory valves? cam is 60210 heads #12
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Conrad
79 Trans AM 406 #12 heads Torker II intake Crower 60210 750 holley vac. sec. T400 3500 Stall 3:73:1 rear.  ECMTTFMFers. IHTTFMFers.
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