Engine Kits

1955-98 Chevy 262-400 Xtreme Marine Retro-Fit Hyd. Roller Camshaft
Click On Image To Enlarge

1955-98 Chevy 262-400 Xtreme Marine Retro-Fit Hyd. Roller Camshaft



Part #: 12-417-8
List Price: $586.88
Our Price: $293.44
You Save: $293.44



Comp Cams Xtreme Marine Retro-Fit Hydraulic Roller Camshaft Chevrolet 262-400 c.i. 8 cyl. 1955-1998 

Hydraulic Roller Lifter is the largest for inboard/outboard, good mid-range with excellent response, noticeable idle.  XM270HR
Advertised Duration 270 int./276 exh.
Advertised Exhaust Duration 276
Advertised Intake Duration 270
Basic Operating RPM Range 1,500-5,500
Brand COMP Cams
Cam Style Hydraulic roller tappet
Computer-Controlled Compatible No
Duration at 050 inch Lift 218 int./224 exh.
Exhaust Duration at 050 inch Lift 224
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.503 in.
Grind Number CS XM 270HR-12
Intake Duration at 050 inch Lift 218
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.495 in.
Lobe Separation (degrees) 112
Notes Retro-fit: Designed for early non-roller blocks. Requires thrust button and wear plate.
Part Type Camshafts
Product Line COMP Cams Xtreme Marine Camshafts
Quantity Sold individually.
Valve Lift with Factory Rocker Arm Ratio 0.495 int./0.503 exh. lift