Northern Auto Part - Index

Northern Auto Part - Northern Auto Parts - Index

Camshafts, Valvetrain & Accessories
Thumpr™ Hydraulic Flat Tappet Camshafts
Now available for hydraulic flat tappet applications, COMP Cams® new Thumpr™ Camshafts are the hottest
cam series to hit the streets in more than a decade. Street rodders and muscle car enthusiasts just can’t get
enough of the incredible exhaust sound and equally impressive performance delivered by these innovative
camshafts. Applying a new camshaft design concept originally created for sports car endurance racing, the COMP Cams®
engineering team incorporated early exhaust valve opening, long exhaust duration and a generous amount of intake and exhaust
overlap to maximize your engine’s nasty-idling characteristics without negatively impacting power output or streetability.
• Long exhaust duration & other design characteristics produce a “serious power” sound
• Excellent hp gains & broad torque curve deliver real seat of the pants performance
THUMPR™ – High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle
MUTHA' THUMPR™ – High performance street/strip, needs 9:1 CR, 2500+ stall, intake, gears, and headers, rough idle
BIG MUTHA' THUMPER™ – Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & headers, very rough idle
VALVE RPM CAMSHAFT DURATION VALVE LIFT LOBE
APPLICATION / CAMSHAFTS SETTING OPERATING PART ADVERTISED @ .050” W/ 1.5 ROCKER SEP. PRICE
IN. EX. RANGE NUMBER IN. EX. IN. EX. IN. EX. ANGLE
THUMPR™ HYD. FLAT TAPPET CAMSHAFTS FOR SMALL BLOCK CHEVY 262-400, '55-'98
THUMPR™ Hyd Hyd 2000 to 5800 12-600-4 279 297 227 241 .479 .465 107° $129.99
MUTHA' THUMPR™ Hyd Hyd 2200 to 6100 12-601-4 287 305 235 249 .489 .476 107° $129.99
BIG MUTHA' THUMPER™ Hyd Hyd 2500 to 6400 12-602-4 295 313 243 257 .500 .486 107° $129.99
THUMPR™ HYD. FLAT TAPPET CAMSHAFTS FOR BIG BLOCK CHEVY 396-454, MARK IV '65-'96
THUMPR™ Hyd Hyd 1800 to 5600 11-600-4 279 297 227 241 .498 .483 107° $129.99
MUTHA' THUMPR™ Hyd Hyd 2000 to 5900 11-601-4 287 305 235 249 .510 .495 107° $129.99
BIG MUTHA' THUMPER™ Hyd Hyd 2300 to 6200 11-602-4 295 313 243 257 .522 .507 107° $129.99
THUMPR™ HYD. FLAT TAPPET CAMSHAFTS FOR SMALL BLOCK FORD 351 WINDSOR, '69-'95*
THUMPR™ Hyd Hyd 2000 to 5800 35-600-4 279 297 227 241 .490 .475 107° $129.99
MUTHA' THUMPR™ Hyd Hyd 2200 to 6100 35-601-4 287 305 235 249 .501 .486 107° $129.99
BIG MUTHA' THUMPER™ Hyd Hyd 2500 to 6400 35-602-4 295 313 243 257 .512 .498 107° $129.99
*TECH NOTE: Fits all Small Block Ford Windsor '62-'95 – those that came with factory hydraulic roller valve trains and those that came with flat tappet valve trains; utilizes 5.0/351W firing order: 1-3-7-2-6-
5-4-8. Also compatible with Ford 221-302 '63-’95, please consult CAM HELP® technician for special installation instructions.
THUMPR™ HYD. FLAT TAPPET CAMSHAFTS FOR SMALL BLOCK CHRYSLER 273-360, '64-'92* (LONG SNOUT)
THUMPR™ Hyd Hyd 2000 to 5800 20-600-4 279 297 227 241 .486 .473 107° $129.99
MUTHA' THUMPR™ Hyd Hyd 2200 to 6100 20-601-4 287 305 235 249 .497 .483 107° $129.99
BIG MUTHA' THUMPER™ Hyd Hyd 2500 to 6400 20-602-4 295 313 243 257 .507 .494 107° $129.99
*TECH NOTE: These cams are only for use with the single shaft mount rocker arm cylinder head; they are not compatible with the '92-'02 Magnum head pedestal or stud mount rocker arms
Customer Satisfaction Survey
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801 Lewis Blvd
Sioux City, IA, 51105
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To order Call Toll Free 1.800.831.0884 or order online! naparts.com 49