Product Description
COMP Cams Thumpr Hydraulic Roller Camshafts 54-703-11
COMP Cams Thumpr Hydraulic Roller Camshafts
Camshaft, Stage 2 Thumpr, Hydraulic Roller, 3-Bolt, 282/299 Advertised Duration, 1,800–6,600 rpm Range, Chevrolet, LS,
Brand: COMP Cams
Manufacturer's Part Number: 54-703-11
Part Type: Camshafts
Product Line: COMP Cams Thumpr Hydraulic Roller Camshafts
UPC: 00036584386438
Cam Style: Hydraulic roller, OE roller
Camshaft Use: Street/Strip
Camshaft Manufacturers Description: HYDRAULIC ROLLER: – Thumpr™ lobe design for awesome idle lope in modified 5.3L & 6.0L truck engines. Required high lift valve springs ensure maximum power gains. AFM & VVT delete.
Basic Operating RPM Range: 1,800-6,600
Intake Duration at 050 inch Lift: 227
Exhaust Duration at 050 inch Lift: 237
Duration at 050 inch Lift: 227 int./237 exh.
Advertised Intake Duration: 282
Advertised Exhaust Duration: 299
Advertised Duration: 282 int./299 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.614 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.612 in.
Valve Lift with Factory Rocker Arm Ratio: 0.614 int./0.612 exh.
Lobe Separation (degrees): 113
Camshaft Gear Attachment: 3-bolt
Remanufactured: No
Computer-Controlled Compatible: Yes
Valve Springs Required: Yes
Quantity: Sold individually.
Notes:
Requires high-lift valve springs, AFM and VVT delete are required.
COMP Cams Thumpr Hydraulic Roller Camshafts
COMP Cams has awakened the muscle car sound--and it is nastier than ever! Thumpr Series camshafts is 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 blending 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.
