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  1. 1964-1974 Tempest/LeMans/GTO Engine Tuning
    I have a 1975 400 block casting 557. It does not have a built in timming tab on the timming cover. I replaced the stock hub with a Proform 6.9 inch balancer. I did mark my cover rolling the motor to TDC in both directions and finding my center (0) however Im looking for a physical tab to...
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