Free #1221 Air Cleaner With AVS or Performer Carb Purchase Shop Edelbrock
Nitrous HP 240/253 Hydraulic Flat Cam SK-Kit for Chevrolet Big Block 396-454

Nitrous HP 240/253 Hydraulic Flat Cam SK-Kit for Chevrolet Big Block 396-454

Nitrous HP 250/264 Hydraulic Flat Cam and Lifter Kit Chevrolet Big Block 396-454

Nitrous HP 250/264 Hydraulic Flat Cam and Lifter Kit Chevrolet Big Block 396-454

Nitrous HP 240/253 Hydraulic Flat Cam for Chevrolet Big Block 396-454

$277.95

HYDRAULIC: Pro street applications with multi stage nitrous kits or 671 blower and vortec supercharger and 3000 stall.

In stock
SKU
11-568-4

BBC - 1965-66 396 c.i. models have an oiling groove in the rear journal. The listed part numbered cams will not fit these models, so if you require a camshaft with the oiling groove, please call us at 1-800-999-0853 or click here to contact us, and we will assist you with placing an order.

More Information
UPC 036584038740
Manufacturer COMP Cams®
Emissions Code
Engine Family Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
RPM Operating Range 2,800-6800
Cam Type Hydraulic Flat Tappet
Camshaft Series Nitrous HP
Camshaft Gear Attachment 3-Bolt
Usage Street/Strip
California Proposition 65 WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Advertised Intake Duration 284
Advertised Exhaust Duration 305
Intake Duration at .050 Inch Lift 240
Exhaust Duration at .050 Inch Lift 253
Intake Valve Lift 0.575
Exhaust Valve Lift 0.595
Lobe Lift Intake 0.338
Lobe Lift Exhaust 0.35
Lobe Separation 113
Intake Centerline 108
Valve Timing Lift 0.006
Exhaust Close ATDC 34
Intake Open BTDC 34
Exhaust Open BBDC 90
Intake Close ABDC 70
Lifter Style Hydraulic Flat Tappet
Recommended Components
Component Part Number
Break-In Lube 159
Rocker Arms 1411-16
Valve Seals 505-16
Valve Locks 612-16
Steel Retainers 741-16
Valve Springs 924-16
Steel Retainers 732-16
Valve Springs 930-16
Timing Set 2110CPG
Timing Set 3110CPG
Push Rods 7854-16
Lifter Kit 812-16
Lifter Kit 858-16
RP Rocker Push Rod Kit RP1411-16
CL-Kit Upgrade CL11-568-4
K-Kit Upgrade K11-568-4
SK-Kit Upgrade SK11-568-4