COMP CAMS THUMPR HYDRAULIC CAMSHAFT 235/249@.50 CO12-601-4 CHEV SB 262-400 V8

COMP CAMS THUMPR HYDRAULIC CAMSHAFT 235/249@.50 CO12-601-4 CHEV SB 262-400 V8

COMP Cams is bringing the musclecar sound back and it's nastier than ever! Let's face it--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 fact, one of the most frequent questions fielded when customers call our tech line is, "what camshaft will give my car that mean-sounding idle?" In an ongoing quest to provide you with the performance and sound you demand, the COMP Cams engineering team proudly introduces the Thumpr series of camshafts. The Thumpr camshafts are a new series of hydraulic flat tappet camshafts. The lobe profile and grind characteristics of these new Thumpr camshafts use a combination of early exhaust valve opening, 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.

Specs:

Application: Chev Small Block Gen 1 262-400ci V8.

Cam Style:Hydraulic flat tappet

Basic Operating RPM Range:2,200-6,100

Intake Duration at 050 inch Lif235

Exhaust Duration at 050 inch Lif249

Duration at 050 inch Lif235 int./249 exh.

Advertised Intake Duration:287

Advertised Exhaust Duration:305

Advertised Duration:287 int./305 exh.

Intake Valve Lift with Factory Rocker Arm Ratio:0.489 in.

Exhaust Valve Lift with Factory Rocker Arm Ratio:0.476 in.

Valve Lift with Factory Rocker Arm Ratio:0.489 int./0.476 exh.

Lobe Separation (degrees):107

Computer-Controlled Compatible:No

Grind Number:287TH7

Valve Springs Required:Yes