COMP Cams 08-602-8 Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for OE Roller SBC
08-602-8 Big Mutha' Thumpr 243/257 Hydraulic Roller Cam for OE Roller SBC
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SKU:CO08-602-8
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Product Information
Big Mutha' Thumpr 243/257 Hydraulic Roller Cam

Product Information
Big Mutha' Thumpr 243/257 Hydraulic Roller CamTechnical Information
Features +
Genuine performance part backed by Engine Master Australia.
Specifications +
- Manufacturer
- COMP Cams
- MPN
- Not provided
- UPC
- 036584171997
- Our Part Number
- CO08-602-8
Lifter Type: Hydraulic Roller
Engine Family: Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998)
K-Kit Upgrade: K08-602-8
Amazon ASIN: B002EDWNQ0
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
10602: 299THR7
Camshaft Series: Thumpr
Usage: Street/Strip
Cam Type: Hydraulic Roller
Grind Number: 299THR7
Basic Operating RPM Range: 1,900-5,600
Intake Duration at .050 Inch Lift: 243
Exhaust Duration at .050 inch Lift: 257
Advertised Intake Duration: 299
Advertised Exhaust Duration: 319
Lobe Separation: 107
Intake Valve Lift: 0.533
Exhaust Valve Lift: 0.519
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: No
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Austempered Ductile Iron
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam and Lifter Kit Upgrade: CL08-602-8
Cam, Lifter and Gear Drive Upgrade: GK08-602-8
Rpm operating range 2500 - 6200
Duration advertised Inlet 299°, Exh 319°
Duration advertised @.050" Inlet 243°, Exh 257°
Valve lift with 1.5 rocker Inlet .533", Exh .519"
Lobe separation angle 107°
Engine Family: Chevrolet 305-350 c.i. 8 Cylinder O.E. Roller (1987-1998)
K-Kit Upgrade: K08-602-8
Amazon ASIN: B002EDWNQ0
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
10602: 299THR7
Camshaft Series: Thumpr
Usage: Street/Strip
Cam Type: Hydraulic Roller
Grind Number: 299THR7
Basic Operating RPM Range: 1,900-5,600
Intake Duration at .050 Inch Lift: 243
Exhaust Duration at .050 inch Lift: 257
Advertised Intake Duration: 299
Advertised Exhaust Duration: 319
Lobe Separation: 107
Intake Valve Lift: 0.533
Exhaust Valve Lift: 0.519
Lifters Included: No
Valve Springs Required: Yes
Assembly Lubricant Included: No
Camshaft Gear Attachment: 3-Bolt
Camshaft Material: Austempered Ductile Iron
California Proposition 65: WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov
Cam and Lifter Kit Upgrade: CL08-602-8
Cam, Lifter and Gear Drive Upgrade: GK08-602-8
Rpm operating range 2500 - 6200
Duration advertised Inlet 299°, Exh 319°
Duration advertised @.050" Inlet 243°, Exh 257°
Valve lift with 1.5 rocker Inlet .533", Exh .519"
Lobe separation angle 107°
Fitment +
Confirm compatibility with our team before ordering when your application is not listed.
Brand +
COMP Cams
COMP Cams develops performance camshafts and coordinated valvetrain components for a broad range of engine platforms. The range includes camshafts, lifters, valve springs, rocker systems, timing components and matched kits for street and competition builds.