What is the diference from a 1979, 1989 and a 1992 Mustang motors? I heard somethin call roller engines!!!!!!!
Its a 1979 Engine small block or big block?????????
The camshaft in the pre-1985Mustang engines uses a flat-tappet cam that pushes directly on the pushrods.
In 1985, Ford changed to a roller camshaft in the Mustang which uses oil filled lifters to ride on the camshaft and then transfer motion to a shorter pushrod. The benefit is lower friction and the ability to have more aggressive camshaft profiles due to a roller wheel riding on the camshaft