Engine Timing Marks

Engine Basic Timing Marks

Setting TDC:

Insure that the No. 1 cylinder is in the TDC position.

Check that the camshaft mark is aligned with mark on camshaft bearing cap. If marks are aligned the engine is in time.

Early Model Camshaft

Marking Cam Gear:

Late Model Camshaft





If the marks do not align, it is necessary to adjust camshaft timing. Refer to Camshaft Adjustments for procedure. Adjustments