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the old flat tappet is hard on the cam and they jump off the peak of the lobe at higher rpm thats why i love a roller cam alot smoother and no jumping off the peak of the lobe
Just a heads up, if you're running a manual trans you'll need an adapter for the block side clutch pivot. Late blocks dont have the cast in boss for the z-bar mount.
the old flat tappet is hard on the cam and they jump off the peak of the lobe at higher rpm thats why i love a roller cam alot smoother and no jumping off the peak of the lobe