Camshaft - Mutha' Thumpr - Hydraulic Roller - Lift 0.563 / 0.546 in - Duration 283 / 303 - 109 LSA - 2300 / 6600 RPM - GM LS-Series - Each

MT 227/241 HRlr LS

Mutha' Thumpr 227/241 Hydraulic Roller Cam

Additional Information

High performance street/ strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.

Application Summary

Fits 4.8, 5.3, 5.7, 6.0, 6.2 and 7.0 Liter LS1, LS2, LS3, LS4, LS6, LS7 plus SUV and Truck Engines (Grinds are specific to displacement and cylinder head design)

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.

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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, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .563/.546, Chevy, Small Block, LS

COMP Cams has awakened the muscle car sound--and it is nastier than ever! Thumpr Series camshafts is a line of cutting-edge hydraulic roller camshafts for engines originally equipped with flat tappet cams. With them, you can expect a substantial power increase without sacrificing reliability or ease of maintenance! The lobe profile and grind characteristics of Thumpr cams include blending an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. This maximizes rough-idling tendencies, delivering a seriously aggressive exhaust note without affecting engine power output. Thumpr camshafts are available in a variety of grind profiles, each producing impressive horsepower and torque performance within a different rpm range.