COMP Cams Thumpr Retrofit Hydraulic Roller Camshafts K34-601-9

COMP Cams is bringing back the musclecar sound—and it's nastier than ever! Few things 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 you demand, COMP Cams' engineering team proudly introduces the Thumpr retrofit hydraulic roller camshafts. They are a series of camshafts designed for use in engines that were originally equipped with flat tappet camshafts. The lobe profile and grind characteristics use a combination of an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap to maximize the rough-idling characteristics of the cams. They give you a seriously aggressive exhaust note without negatively impacting the power output or streetability of the engine. Thumpr camshafts 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. COMP Cams Thumpr Series camshafts feature a cutting-edge hydraulic roller design that delivers a substantial power increase over identical hydraulic flat tappet grinds—without sacrificing reliability or ease of maintenance.Brand: COMP Cams
Manufacturer's Part Number: K34-601-9
Part Type: Camshaft Kits
Product Line: COMP Cams Thumpr Retrofit Hydraulic Roller Camshafts
HP Direct Part Number: CCA-K34-601-9
UPC: 036584215233
Cam Style: Hydraulic roller, Retro-fit
Basic Operating RPM Range: 2,200-5,900
Camshaft Use: Street/Strip
Camshaft Manufacturers Description: Street/strip applications, 9:1+ compression, 2500+ stall, intake headers, and gearing.
Intake Duration at 050 inch Lift: 235
Exhaust Duration at 050 inch Lift: 249
Duration at 050 inch Lift: 235 int./249 exh.
Advertised Intake Duration: 291
Advertised Exhaust Duration: 311
Advertised Duration: 291 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.567 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.551 in.
Valve Lift with Factory Rocker Arm Ratio: 0.567 int./0.551 exh.
Lobe Separation (degrees): 107
Grind Number: 291THR7
Computer-Controlled Compatible: No
Lifters Included: Yes
Lifter Style: Hydraulic roller
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in.): 1.509 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: No
Quantity: Sold as a kit.