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Camshaft versus Crankshaft dot location to reflect TDC

This is a discussion on Camshaft versus Crankshaft dot location to reflect TDC within the Firebird / WS6 forums, part of the Vehicle Specific category; I have disassembled and reassembled my timing 3 times. I have lined up my dots for the Camshaft at 6 ...

  1. #1
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    1997 ws6 Trans Am

    Angry Camshaft versus Crankshaft dot location to reflect TDC

    I have disassembled and reassembled my timing 3 times.
    I have lined up my dots for the Camshaft at 6 o'clock and my Crankshaft at 12 o'clock. My Dowel pin for my Camchaft is at 3 o'clock. With what I believe is TDC on my first piston.

    I have read a book called How to Rebuild Small-Block Chevy LT-1/LT-4 Engines. Page 149 under "prepare the engine for Distributor" it indicates that both dots are to be at 12 o'clock with the camshaft dowel being at 9 o'clock .

    In the Haynes Repair manual, Chapter 2, Section 10 under installation, step 15 indicates " Loop the new chain over the camshaft sprocket, then turn the sprocket until the timing mark is in the 6 o'clock position. Illustration shows dots at 6 and 12, Cam at 6 and Crank at 12.

    Which is right? I have a 97 TA/ WS6 LT1 5.7L. This is my last attempt to fix otherwise a .45 cal is in call, straight to block. Engine Block that is.

  2. #2
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    I prefer a stick of dynamite.
    Cam to crank timing is correct with the Cam @ 6 and Crank @ 12.
    Then rotate crankshaft until engine is at number 1 cylinder top dead center (TDC) (camshaft sprocket pin at the 9 o'clock position) to install the distributor

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