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Technical Articles for Part Number CCA-CL42-602-11
COMP Cams Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kits CL42-602-11
Part Number: CCA-CL42-602-11
COMP Cams Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kits
Camshaft Kits, Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kits, Retro-fit, Advertised Duration 299/319, Lift .552/.537, Olds, Oldsmobile V8, Kit
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Estimated Ship Date: Dec 14, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
CL42-602-11
Part Type:
Product Line:
Summit Racing Part Number:
CCA-CL42-602-11
UPC:
00036584381877
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
2,300-6,100
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Intake Duration at 050 inch Lift:
243
Exhaust Duration at 050 inch Lift:
257
Duration at 050 inch Lift:
243 int./257 exh.
Advertised Intake Duration:
299
Advertised Exhaust Duration:
319
Advertised Duration:
299 int./319 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.552 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.537 in.
Valve Lift with Factory Rocker Arm Ratio:
0.552 int./0.537 exh.
Lobe Separation (degrees):
107
Camshaft Gear Attachment:
1-bolt
Grind Number:
299THR7
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
COMP Cams Big Mutha Thumpr Hydraulic Roller Cam and Lifter Kits
COMP Cams is bringing the muscle car sound back, and it's nastier than ever--Big Mutha' Thumpr hydraulic roller cam and lifter kits. These camshafts are for use in engines that were originally equipped with flat tappet camshafts and are designed to maximize the rough-idling characteristics of the cams, giving you a seriously aggressive exhaust note without negatively impacting the power output or street ability of the engine. COMP Cams Big Mutha' Thumpr cam and lifter kits deliver a cutting-edge hydraulic roller cam offering a substantial power increase, reliability, and ease of maintenance, along with a set of matched lifters.
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Some parts are not legal for use in California or other states with similar laws / regulations
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