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The Thumpr™ Camshafts are a new series of hydraulic flat tappet and hydraulic roller camshafts designed for use in Small & Big Block Chevy, Ford 351 Windsor and Small Block Chrysler engines.
The reason that the new Thumpr™ Camshafts have such an aggressive exhaust note is that the lobe profiles and grind characteristics chosen by the COMP Cams® engineers produce 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 without negatively impacting the power output or streetability.
Thumpr™ Camshafts are available 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. Their cutting-edge design means that they will deliver a substantial power increase over "tamer" camshaft grinds without sacrificing reliability or ease of maintenance.
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