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COMP Cams Mutha' Thumpr 4/7 Swap 235/249 Hydraulic Roller Cam for Chevrolet 348-409

Part # 48-601-10

Description

Mutha' Thumpr 4/7 Swap 235/249 Hydraulic Roller Cam

Specifications

Advertised Exhaust Duration311 deg
Advertised Intake Duration291 deg
Assembly Lubricant IncludedNo
Basic Operating RPM Range2,200-6,200 RPM
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.
Cam TypeHydraulic Roller
Camshaft Gear Attachment3-Bolt
Camshaft MaterialBillet Steel
Camshaft SeriesThumpr 4 and 7 Swap Firing Order
Engine FamilyChevrolet 348-409 c.i. 8 Cylinder (1958-1965)
Exhaust Duration at .050 inch Lift249 deg
Exhaust Valve Lift0.558 in
Grind Number47S 291MTHR-8
Intake Duration at .050 Inch Lift235 deg
Intake Valve Lift0.574 in
Lifter TypeHydraulic Roller
Lifters IncludedNo
Lobe Separation108 deg
Valve Springs RequiredYes
UPC / GTIN00036584267768