Comp Cams Xtreme Energy, 268HR112 Mild Performance, Needs Spring Upgrade Apoc Industries Questions about fitment for other

Questions about fitment for other grille types

Vandura 1988 GMC G3500 Rally Custom 1988 - 1996 GMC G3500 Vandura Special

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WT 2002 - 2005 GMC Sierra 3500 Base 2001 - 2006 GMC Sierra 3500 SLE

Rally STX 1975 - 1978 GMC G25 Vandura

Comp Cams Xtreme Energy, 268HR112 Mild Performance, Needs Spring Upgrade Apoc Industries Questions about fitment for otherXtreme Energy, 268HR112 Mild Performance, Needs Spring Upgrade Hydraulic: Mild performance cam, needs spring upgrade and may require computer modifications. Specifications Lifter Type: Hydraulic Roller Lifter Engine Family: Ford 3. 8L & 4. 2L V6 1989 Present Cam Family: Xtreme Energy Hydraulic Roller Tappet Camshafts RPM Range: 1500 to 5800 Valve Timing: 0. 006 Lobe Separation: 112 Intake Centerline: 108 Valve Lash: Hyd.(Intake) Hyd.(Exhaust)