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Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: Aligning crank timing sprocket with Camshaft front gear
I suppose you mean fore and aft movement on an early motor. Most times this can be determined with the condition of the timing chain, ie. new vs. used or single vs. double row chain. This can also be achieved with after market torrington type bearing and wear plates between cam gear and block. But on an early motor the flat tappet cam wants to walk forward and if you dont have a cam gear button or some device to keep the cam from doing so, your gear alignment is apt to go forward as far as the timing chain will allow or eventually wear thru the timing cover in severe cases. . Late model motors with the cam retaining plate keep this from happening but they are also factory rollers. Flat tappet cams are off center a little to keep lifter spinning in lifter bores to keep the wear patterns down.
If its a later model motor ie. one piece main seal type factory rollers, they have a bolt on wear plate to the block that is specific to that cam. Keep in mine early cams differ from late model cams. Hope this helps. Some one else may chime in here if they have found something else.
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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Last edited by zdld17; Mar 30th, 10 at 07:50 PM.