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This hydraulic roller design contains eccentric for mechanical fuel pump. The duration at .050" tappet lift (intake/exhaust) is 222/230; and maximum lift with 1.5:1 rocker ratio (intake/exhaust) is 509/528. Valve lash is zero/zero and lobe centerline is 112 degrees.
1972 Coupe ZZ383-500 w/Sidepipes/2004R/Vintage Air/etc
2012 Inferno Orange Grand Sport 4LT w/manual 6 speed, F55 mag ride, NPP
1984 Jeep CJ7
2004 Toyota Tundra Double Cab
2004 Land Rover Discovery firstname.lastname@example.org