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Technical Articles for Part Number CCA-K08-600-8
COMP Cams Thumpr Hydraulic Roller Cam and Lifter Kits K08-600-8
Part Number: CCA-K08-600-8
COMP Cams Thumpr Hydraulic Roller Cam and Lifter Kits
Cam/Lifter, Valvetrain, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .513/.498, Chevy, 5.0, 5.7L
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Overview
Brand:
Manufacturer's Part Number:
K08-600-8
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K08-600-8
UPC:
036584184980
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
1,900-5,600
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
227
Exhaust Duration at 050 inch Lift:
241
Duration at 050 inch Lift:
227 int./241 exh.
Advertised Intake Duration:
283
Advertised Exhaust Duration:
303
Advertised Duration:
283 int./303 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.513 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.498 in.
Valve Lift with Factory Rocker Arm Ratio:
0.513 int./0.498 exh.
Lobe Separation (degrees):
107
Camshaft Gear Attachment:
3-bolt
Grind Number:
283THR7
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
Yes
Outside Diameter of Outer Spring (in.):
1.240 in.
Retainers Included:
Yes
Locks Included:
Yes
Valve Stem Seals Included:
Yes
Timing Chain and Gears Included:
Yes
Timing Chain Style:
Double roller
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 Thumpr Hydraulic Roller Cam and Lifter Kits
COMP Cams is bringing the musclecar sound back, and it's nastier than ever! Few things serve to grab our attention at a car show or cruise night more than a car with a thumping, high performance idle. In an ongoing quest to provide you with the performance and sound that you demand, COMP Cams' engineering team proudly introduces the Thumpr Series hydraulic roller cam and lifter kits. They are designed for use in engines that were originally equipped with flat tappet camshafts. The lobe profile and grind characteristics of these Thumpr camshafts use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. They're designed to maximize the rough-idling characteristics of the cams, giving you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. They are available in three different grind profiles. Each one will produce a rough, racy exhaust note and impressive amounts of horsepower and torque within a different rpm range. Thumpr Series cam and lifter kits feature a cutting-edge hydraulic roller design that delivers a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance.
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Some parts are not legal for use in California or other states with similar laws / regulations
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