COMP Cams Camshaft C409 47S299THR8

Big Mutha' Thumpr 4/7 Swap 243/257 Hydraulic Roller Cam

Additional Information

Street/strip, needs 9.5:1 compression, 2800+ stall. Intake, gears, and headers. Very rough idle.

Part Type

Engine Camshaft

Product Overview

*Thumpr Camshafts*
• Three unique cam designs for each application that deliver excellent horsepower gains and broad torque curve; perfect choice for muscle cars and street rods
• Early intake valve opening and long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
• Best with aftermarket converters and more rear gear

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Product Details

Product Downloads

#	Document Type	Download
1.	Catalog

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

Camshaft, Big Mutha Thumpr, Hydraulic Roller Tappet, RPM Range 2,500-6,400, Advertised Duration 299/319, Chevrolet, Each

COMP Cams Big Mutha Thumpr hydraulic roller camshafts are perfect for folks looking for great performance and wild camshaft idle. The basic science behind the Thumpr cams isn't new. This cam line delivers true high performance engine sound by "tightening" the lobe separation angle of the camshaft. This, in turn, creates more overlap between exhaust and intake events, as well as more aggressive performance sound. Available in different grind profiles, each Thumpr cam produces impressive horsepower and torque performance within a different RPM range. If you're looking for a cam that makes your engine sound meaner than it is, the COMP Cams Big Muthra Thumpr cams could be the right call. Order the model recommended for your year/make and engine application.