COMP Cams Camshaft FW 299T HR-107 BMT T

Big Mutha' Thumpr 243/257 Hydraulic Roller Cam

Additional Information

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

Application Summary

Fits Ford Small Block Engines originally equipped with "Old" firing order and 351 Windsor engines with the "Windsor" firing order

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

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

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, Advertised Duration 299/319, Lift .552/.538, Ford, Small Block, 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.