Product Description
COMP Cams Thumpr Hydraulic Roller Camshafts 54-602-11
Camshaft, Hydraulic Roller Tappet, Advertised Duration 291/311, Lift .573/.558, Chevy, Small Block, LS
COMP Cams Thumpr Hydraulic Roller Camshafts
- Brand: COMP Cams
Manufacturer's Part Number: 54-602-11
Part Type: Camshafts
Product Line: COMP Cams Thumpr Hydraulic Roller Camshafts
UPC: 036584195184
Cam Style: Hydraulic roller, OE roller
Camshaft Use: Street/Strip
Basic Operating RPM Range: 2,600-6,800
Intake Duration at a 50-inch Lift: 235
Exhaust Duration at a 50-inch Lift: 249
Duration at a 50-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: 0.573 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.558 in.
Valve Lift with Factory Rocker Arm Ratio: 0.573 int./0.558 exh.
Lobe Separation (degrees): 109
Camshaft Gear Attachment: 3-bolt
Remanufactured: No
Computer-Controlled Compatible: Yes
Grind Number: 291THR9
Valve Springs Required: Yes
Quantity: Sold individually.
Notes:
Cannot use stock springs. Stall converters (2800 and up), 9.5:1 compression, gears, and headers are recommended. Custom computer tuning required.
COMP Cams Thumpr Hydraulic Roller Camshafts
COMP Cams has awakened the muscle car sound—and it is nastier than ever! Thumpr Series camshafts are a line of cutting-edge hydraulic roller camshafts for engines originally equipped with flat tappet cams. With them, you can expect a substantial power increase without sacrificing reliability or ease of maintenance! The lobe profile and grind characteristics of Thumpr cams include an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. This maximizes rough-idling tendencies, delivering a seriously aggressive exhaust note without affecting engine power output. Thumpr camshafts are available in a variety of grind profiles, each producing impressive horsepower and torque performance within a different rpm range.