Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for OE Roller SBC

Description

Additional Attributes:

GTIN: 00036584171997
Advertised Exhaust Duration: 319
Advertised Intake Duration: 299
Amazon ASIN: B002EDWNQ0
Assembly Lubricant Included: No
Basic Operating RPM Range: 1,900-5,600
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 and Lifter Kit Upgrade: CL08-602-8
Cam Type: Hydraulic Roller
Cam, Lifter and Gear Drive Upgrade: GK08-602-8
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Austempered Ductile Iron
Camshaft Series: Thumpr
Engine Family: Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998)
Exhaust Duration at .050 inch Lift: 257
Exhaust Valve Lift: 0.519
Grind Number: 299THR7
Intake Duration at .050 Inch Lift: 243
Intake Valve Lift: 0.533
K-Kit Upgrade: K08-602-8
Lifter Type: Hydraulic Roller
Lifters Included: No
Lobe Separation: 107
Usage: Street/Strip
Valve Springs Required: Yes