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looking for stock camshaft specs

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  • looking for stock camshaft specs

    hey,
    does anyone know what the stock specs are of a 91 3.4l camshaft? im looking for duration of intake and exhaust lobes, and how many degrees of overlap there are on a stock engine, even lead or lag numbers would help me out.
    thanks

  • #2
    In Inches:

    Lift Intake 0.370 @ 108* Crank ATDC
    Lift Exhaust 0.370 @ 115* Crank BTDC
    Journal DIA 2.1643 - 2.1654
    Bore Inside DIA 2.1673 - 2.1683
    Journal Clearance 0.0019 - 0.0040

    Cam Timing Flats
    - Right Bank TDC -1 Piston Exhaust Stroke
    +/- 2* of Crankshaft
    Cam Timing Flats
    - Left Bank TDC -4 Piston Exhaust Stroke
    +/- 2* of Crankshaft
    1991 Grand Prix STE
    3.4 DOHC
    1 of 792 Produced
    Extensive Mods Done

    1991 Lumina Z34
    3.4 DOHC
    Getrag 284 5spd
    1 of 30
    Canadian Z34 Models Made with the Getrag 5spd Wahoooo!

    1980 GMC Sierra Classic C25 With 18,000 ORIGINAL MILES!!!!

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    • #3
      thanks for the info,
      any ideas on duration? i wanna know exactly how many degrees of crankshaft rotation there are between power strokes.

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