Get a shop manual , You line up the dot on the cam gear with the dot on the crank gear ,the crank gear dot is at a tooth and the dot on the cam gear is in between two teeth,if you're putting in engine together get a shop manual for that year truck and engine all the places like Clasic of America have them as reprints and they will help alot as you're building the engine and the truck.When building it's good just to leave it on the bench so it's handy.


Pete