The Stovebolt Site Forums The Shop Area Engine Shop SBC timing trouble MSD ignition

Hy OldIronChevy, when timing the crank and cam gear the mark on the crank should be at twelve o'clock and the mark on the cam gear should be at six o'clock. If I'm remembering correctly the engine is not at T.D.C. #1 compression when the cam and crank gear are in alignment, hope that helps.