Comp Cams Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455 - 42-602-5
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455
PRODUCT NOTES:
Camshaft Series - Thumpr
Usage - Street/Strip
Cam Type - Hydraulic Flat Tappet
Grind Number - 295TH7
Basic Operating RPM Range - 2,500-6,400 R3
Intake Duration at .050 Inch Lift - 242 DD
Exhaust Duration at .050 inch Lift - 257 DD
Advertised Intake Duration - 294 DD
Advertised Exhaust Duration - 312 DD
Lobe Separation - 107 DD
Intake Valve Lift - 0.512 IN
Exhaust Valve Lift - 0.497 IN
Lifters Included - No
Valve Springs Required - Yes
Assembly Lubricant Included - Yes
Camshaft Gear Attachment - 1-Bolt
Camshaft Material - Cast Iron
Engine Family - Oldsmobile 260-455 c.i. 8 Cylinder (1967-1990)
Cam and Lifter Kit Upgrade - CL42-602-5
California Proposition 65 - WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
K-Kit Upgrade - K42-602-5
Lifter Type - Hydraulic Flat Tappet
Title - Big Mutha' Thumpr 242/257 Hydraulic Flat Cam for Oldsmobile 260-455
Amazon ASIN - B005H89WWW
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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