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5.0L (1979-1995) MustangTechnical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.
simply hydra roller stuff just reduces friction making better hp but somewhere i heard i think flat tappet is better for higher rpm use not sure about that though
if your gonna keep shifting a 6500 keep the roller unless your wanna start shifting at 7-8 grand. i meant 6000+ as if your gonna spend awhile above 6grand
RE: solid flat tappet vs hydraulic roller
