Xtreme Energy 4/7 Swap 250/256 Hydraulic Flat Cam Chevrolet Big Block 396-454

Description

Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts, the Xtreme Energy grind family offers gains in torque and horsepower while still delivering adequate vacuum for power brakes and other vacuum dependent accessories. Xtreme Energy camshafts work great in carbureted applications, but offer the best performance with aftermarket intake manifolds, lower gear ratios, headers and free flowing exhaust.

Additional Attributes:

GTIN: 00036584096658
Advertised Exhaust Duration: 306
Advertised Intake Duration: 294
Amazon ASIN: B001G7A8XK
Assembly Lubricant Included: Yes
Basic Operating RPM Range: 2,800-7000
C.A.R.B. E.O. Number: N/A
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 Federally Certified Vehicles Manufactured Before 1967?: 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. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
C.A.R.B. Exemption Reason: N/A
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam Type: Hydraulic Flat Tappet
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Cast Iron
Camshaft Series: Xtreme Energy 4 and 7 Swap Firing Order
Engine Family: Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Exhaust Duration at .050 inch Lift: 256
Exhaust Valve Lift: 0.593
Grind Number: XE294H-10
Intake Duration at .050 Inch Lift: 250
Intake Valve Lift: 0.588
Lifter Type: Hydraulic Flat Tappet
Lifters Included: No
Lobe Separation: 110
Usage: Street/Performance
Valve Springs Required: Yes