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Lifters
Because of changes in oils and the wider availability of modern valvetrain components for traditional Pontiacs, Butler Performance recommends upgrading to hydraulic roller cams and lifters in most applications unless a solid roller is required.
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Hydraulic Flat Tappet Lifters - These feature a plunger inside the lifter that allows oil to pressurize it. This allows a cushion of sorts that self adjusts and maintains zero lash. It also helps...More Details »
Hydraulic Roller Lifters - These lifters have the same hydraulic cylinder technology and advancment as the hydraulic flat tappet version but feature a roller in place of the tappet. As the cam...More Details »
Solid Flat Tappet Lifters - These lifters have no internal hydraulic mechanism to take up clearance. They require valve lash, or the clearance needed for the lifter to unload when the cam comes...More Details »
Solid Roller Lifters - These lifters have no internal hydraulic mechanism to take up clearance as in the hydraulic versions. They feature a roller in place of the tappet as well. As the cam turns...More Details »
