Chevrolet Nova/ChevyII 1962-1979

Timing Chain



V8 Engines

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Fig. Fig. 1 Alignment of the timing marks-V8 engines

V8 models are equipped with a timing chain. To replace the chain, remove the radiator core, water pump harmonic balancer, and crankcase front cover. This will allow access to the timing chain. Crank the engine until the zero marks punched on both sprockets are closest to one another and in line between the shaft centers. Take out the three bolts that hold the camshaft gear to the camshaft. This gear is a light press fit on the camshaft and will come off readily. It is located by a dowel.

The chain comes off with the camshaft gear.

A gear puller will be required to remove the crankshaft gear.

Without disturbing the position of the engine, mount the new crank gear on the shaft, then mount the chain over the camshaft gear. Arrange the camshaft gear in such a way that the timing marks will line up between the shaft centers and the camshaft locating dowel will enter the dowel hole in the cam sprocket.

Place the cam sprocket, with its chain mounted over it, in position on the front of the camshaft and pull up with the three bolts that hold it to the camshaft.

After the gears are in place, turn the engine two full revolutions to make certain that the timing marks are in correct alignment between the shaft centers.