COMP Cams 12-416-8 - Camshaft CS XM 264HR-12
Xtreme Marine 212/218 Hydraulic Roller Cam for Chevrolet Small Block
Good for inboard/outboard pleasure boat, skiing and good economy.
Skiing and good economy
Xtreme Marineâ„¢ -Designed to maximize torque, acceleration and throttle response while providing excellent high RPM horsepower. A faster intake valve opening increases engine vacuum and enhances throttle response. Special intake closing ramps close the valve sooner, providing more cylinder pressure and torque without resulting in excessive valve train noise. Faster ramps achieve maximum velocity sooner, increasing the area under the lift curve and providing maximum horsepower. Smoother exhaust designs allow for a more effective purge of spent gasses from the combustion chamber to further increase horsepower. Feature CRC (Constant Radius of Curvature) Technology that ensures durability with aggressive hydraulic Roller designs.WARNING: Camshaft Optimized for use with a Melanized or Nitrided distributor Gear. Not compatible with cast or Steel Gears without similar surface treatments. Failure to utilize the proper distributor Gear will void all warranties and/or return policies. 1: Cams for '55-'57 engines can be custom ordered. 2: The '87+ Chevy Small Block received provisions for Roller lifters. Most '87 - '93 GM cars came with Roller lifters, but most '87 - '95 trucks came with flat tappet lifters in Roller lifter style blocks. If your block has '87+ OEM-style Roller Cam provisions but does not have Roller components fitted, COMP Hydraulic Roller Lifter Install Kit for '91-'02 Blocks can be purchased. As well as a
'87+ OE-Style COMP Hydraulic Roller Cam.
K-Kit Upgrade: K12-416-8
Lifter Type: Hydraulic Roller
SK-Kit Upgrade: SK12-416-8
Amazon ASIN: B000P5G6KI
C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
C.A.R.B. Exempt for On-Road Vehicles?: No
C.A.R.B. Exemption Reason: N/A
C.A.R.B. E.O. Number: N/A
Grind Number: XM264HR
Camshaft Series: Xtreme Marine
Usage: Marine
Cam Type: Hydraulic Roller
Grind Number: XM264HR
Basic Operating RPM Range: 1,200-5,200
Intake Duration at .050 Inch Lift: 212
Exhaust Duration at .050 inch Lift: 218
Advertised Intake Duration: 264
Advertised Exhaust Duration: 270
Lobe Separation: 112
Intake Valve Lift: 0.488
Exhaust Valve Lift: 0.495
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: No
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Austempered Ductile Iron
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Cam and Lifter Kit Upgrade: CL12-416-8