Comp Cams Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit Chevrolet Big Block 396-454 - GK11-602-8
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit Chevrolet Big Block 396-454
PRODUCT NOTES:
Advertised Exhaust Duration - 319 DD
Kit Type - GK-Kit - Cam and Gear Kit
Usage - Street/Strip
Title - Big Mutha' Thumpr 243/257 Hydraulic Roller GK-Kit Chevrolet Big Block 396-454
Timing Chain and Gears Included - Yes
Retainers Included - No
Pushrods Included - No
Locks Included - No
Lifters Included - Yes
Lifter Type - Hydraulic Roller
Intake Valve Lift - 0.57 IN
Advertised Intake Duration - 299 DD
Intake Duration at .050 Inch Lift - 243 DD
Gaskets Included - No
Exhaust Valve Lift - 0.554 IN
Exhaust Duration at .050 inch Lift - 257 DD
Engine Family - Chevrolet 396-454 c.i. 8 Cylinder (1967-1996)
Camshaft Series - Thumpr
Cam Type - Hydraulic Roller
California Proposition 65 - WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Basic Operating RPM Range - 2,500-6,100 R3
Valve Stem Seals Included - No
Amazon ASIN - B002EE7EW2
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
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