THUMPR™ CAMS by Comp Cams

Thumpr cams deliver incredible exhaust lope and impressive performance. Comp Cams designed the Thumpr series of camshafts to deliver the meanest-sounding idle on the block, but without skimping in the horsepower department!

Available in retro-fit hydraulic roller and hydraulic flat tappet for carbureted Small and Big Block Chevy, Ford 351 Windsor, LS engines, Ford 4.6/5.4L Modular 3V engines, Small Block Chrysler, as well as Small Block Chevy factory hydraulic roller blocks. Thumpr Camshafts are availabe in three different grind profiles for each engine, all of which will produce a rough, racy exhaust note and impressive amounts of horsepower and torque.
CHECK OUT a sample of the Thumpr Grinds available below!


RETRO-FIT HYDRAULIC ROLLER CAMSHAFTS
Small Block Chevy 262-400, 1955-1998 Non Factory Roller Block
Application/ Camshaft Valve
Setting
RPM
Operating
Range
Camshaft
Part
Number
Cam
Grind
Number
Duration
Adv.  
Duration
@.050"
Valve Lift
@ 1.7:1
Lobe
Sep.
Angle
IN. EXH. IN. EX. IN. EX.
Thumpr™ - High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle Hyd 1900-5600 12-600-8 283THR7 283 303 227 241 .513 .498 107°
Mutha' Thumpr™ - High performance street/ strip, needs 9:1 CR, 2500+ stall, intake, gears, and headers, rough idle Hyd 2200-5900 12-601-8 291THR7 291 311 235 249 .522 .509 107°
Big Mutha' Thumpr™ - Street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, & headers, very rough idle Hyd 2500-6200
12-602-8
299THR7
299
319
243
257
.533
.519
107°
Even the mildest Thumpr cam profile produces a significant increase in Torque and Horsepower!

Click Here to view a Video of the Thumpr cams in use.
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Performance Wholesale Australia Pty Ltd is Australia’s largest supplier of high performance engine parts. Bill Mann Performance Engines started as a machine shop assembling high performance engines for customer’s racecars in 1976. This is how importing engine components began so Bill could test the latest parts direct from the USA. As this part of the business grew, he decided to open Performance Wholesale in 1986 so he could supply the best engine components available for any type of race engine. It has grown from strength to strength over the years with one of the best sales and technical teams in Australia able to support and advise customers on their high performance motorsport and race engine requirements.

Our reputation is built on supplying our customers with the best brands of high performance parts for their application. We supply the motorsport industry with the best products and the best technical support.