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. The Thumpr Camshafts are a series of hydraulic flat tappet and hydraulic roller camshafts that are now available for most popular applications, carb and late model efi. In fact, one of the most frequent questions fielded when customers call our CAM HELP® tech line is what cam will give my engine a mean-sounding idle? In response to this popular demand, the COMP Cams® engineering team proudly introduces the Thumpr series of camshafts. Lets 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. I'm hoping for 300 hp with that combo,Ĭheck out Thumper cams as well, my buddy BigSteve is running one in his truck, marine 350 with a thumpercam, it sounds crazy, but very streetable. I have a Voodoo sitting ready to be installed along with Vortec heads on my 350.
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