Comp Cams Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam for Chevrolet 348-409 - 48-602-10
Street/strip, needs 9.5:1 compression, 2800+ stall. Intake, gears, and headers. Very rough idle.
Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam for Chevrolet 348-409
PRODUCT NOTES:
Camshaft Series - Thumpr 4 and 7 Swap Firing Order
Cam Type - Hydraulic Roller
Grind Number - 47S 299BMTHR-8
Basic Operating RPM Range - 2,500-6,400 R3
Intake Duration at .050 Inch Lift - 243 DD
Exhaust Duration at .050 inch Lift - 257 DD
Advertised Intake Duration - 299 DD
Advertised Exhaust Duration - 319 DD
Lobe Separation - 108 DD
Intake Valve Lift - 0.586 IN
Exhaust Valve Lift - 0.571 IN
Lifters Included - No
Valve Springs Required - Yes
Assembly Lubricant Included - No
Camshaft Gear Attachment - 3-Bolt
Camshaft Material - Billet Steel
Engine Family - Chevrolet 348-409 c.i. 8 Cylinder (1958-1965)
California Proposition 65 - WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Lifter Type - Hydraulic Roller
Title - Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam for Chevrolet 348-409
Amazon ASIN - N/A
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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