explain the triangle, circle, and square marks on a 1995 5.7 chevrolet crank shaft timimg gear, witch one do you use to aline the camshaft?

72,145

Asked by Jul 09, 2015 at 11:51 AM about the 1995 Chevrolet C/K 1500 Cheyenne Standard Cab LB

Question type: Maintenance & Repair

competition  cam, .560 lift intake, duration 210, .550 lift exhaust, 218 duration, separation 113 deg.    Jegs P/N 249-08-465-8  with a double roller timing chain and gears

1 Answer

72,145

I found out, the triangle mark is top dead center on the crank shaft gear, so you line up the camshaft gear mark at 6=O'clock to the crank shaft gear triangle mark at 12- O'clock. Different manufactures will mark certain degrees on the crank shaft gear, but you need to know witch one is top dead center. Some or most only have a dot at TDC on the crank shaft gear.

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