The centerline method does not require any special setup, but it does require some simple math, so you may want a calculator. Begin by rotating the engine clockwise until the dial indicator reads max lift. Set the dial indicator to zero and rotate the engine counterclockwise until the dial indicator reads roughly 0.100 inch down from max lift. This is done to take out any slack that may be present in the timing chain.

Note: You always want to hit your points by spinning the crank in the same direction it will rotate when the engine is running, which removes any variances created by slack in the timing chain. If your rings provide a lot of friction, it can be easy to go too far. If so, back up and try again. Just do not set the dial to 0.050 by turning the crank counterclockwise.

Continue by slowly rotating the engine clockwise until the dial indicator reads 0.050 inch before maximum lift (or zero) and record the number on the degree wheel. Next, continue to rotate the crankshaft clockwise through maximum lift (past zero) and onward until the dial indicator reads 0.050 inch after maximum lift (this is the closing side of the intake lobe), and again record the number on the degree wheel. Next, add those two numbers together and divide by two. The resulting number will be the location of maximum lift in relation to the crankshaft, which is known as the camshafts intake centerline. This number should be the same as the camshafts lobe center if the cam was ground straight up. If the numbers match, the cam is installed properly. If not, adjust the cam accordingly, either by advancing or retarding the camshaft.