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77 GS 750 2 VALVE GS 850 2 VALVE

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    77 GS 750 2 VALVE GS 850 2 VALVE

    IS THERE A DIFFERENCE IN LIFT AND DURATION BETWEEN THE 2? I HAVE A 77 GS 750, TOTALLY REDONE, JUST INSTALLED A BIG BORE KIT. I CAN GET A SET OF CAMS FROM A 850. BUT BEFORE I WAIST TIME AND MONEY I NEED TO KNOW THE DIFFERENCE. IS THERE ANY ? AND WHAT ARE THE SPECS ON EACH?.

    #2
    The Intake cams are the same. The exhaust cams are different. The 750 cam is better for high RPM power. Clymer manuals from the late 70s & early 80s recommend using a 750 exhaust cam & adjustable cam sprockets.

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