COMP Cams 12-568-4 - Camshaft CS Nx284H-13
Nitrous HP 240/253 Hydraulic Flat Cam for Chevrolet Small Block
Pro Street applications, excellent for multi-stage kits or 671 blower. 2800+ stall.
Fits '58-'02 262-400 c.i.d. Chevy Small Blocks
Pro Street Applications - Excellent for multi-stage nitrous or 671 blower - 2800+ stallXtreme Energyâ„¢ Cams are 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.For Carb or Tunable Fuel Injection3 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 a Roller Cam is desired and your block has OEM-style Roller Cam provisions. COMP Hydraulic Roller Lifter Install Kit for
'87-'90 Blocks or
'91-'02 Blocks can be purchased, as well as a
'87+ OE-Style Hydraulic Roller Cam.
Camshaft Material: Cast Iron
SK-Kit Upgrade: SK12-568-4
Engine Family: Chevrolet 262-400 c.i. 8 Cylinder (1958-1998)
Lifter Type: Hydraulic Flat Tappet
K-Kit Upgrade: K12-568-4
Cam and Lifter Kit Upgrade: CL12-568-4
Amazon ASIN: B000N5QC2C
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: NX284H
Camshaft Series: Nitrous HP
Usage: Street/Strip
Cam Type: Hydraulic Flat Tappet
Grind Number: NX284H
Basic Operating RPM Range: 2,800-6,800
Intake Duration at .050 Inch Lift: 240
Exhaust Duration at .050 inch Lift: 253
Advertised Intake Duration: 284
Advertised Exhaust Duration: 305
Lobe Separation: 113
Intake Valve Lift: 0.507
Exhaust Valve Lift: 0.525
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: Yes
Camshaft Gear Attachment: 3-Bolt