SKU: 12-602-8

SBC Big Mutha' Thumpr 243/257 LSA 107 Hydraulic Roller Camshaft, Chevy Small Block, 350, Extreme Choppy Idle, Best Sound,

Extreme Choppy Idle


In Stock


COMP Cams Thumpr Small Block Chevy 350 Retrofit Hydraulic Roller Camshafts - Extreme Choppy Idle!

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

COMP Cams reinvigorates the iconic muscle car rumble with their Thumpr Series for small block Chevy Camshafts, offering an unmistakably aggressive idle that's sure to turn heads. Engine enthusiasts know there's something captivating about a car exhibiting that deep, performance-driven thumping sound!. Comp Cams answered the call of enthusiasts, the Comp Cams Thumpr! This retrofit Chevy 350 hydraulic roller camshaft are specifically crafted for SBC engines initially designed with flat tappet camshafts. Leveraging a unique blend of early exhaust valve openings, elongated exhaust durations, and ample intake-exhaust overlap, these Comp Cams Thumpr cams are meticulously engineered to accentuate their rough-idling attributes. This ensures not only an assertive exhaust sound but also retains optimal power, this Comp Cams Chevy 350 performance camshaft packs a punch!. With three distinct grind profiles, each Thumpr camshaft caters to varied horsepower and torque preferences. Furthermore, the innovative SBC hydraulic roller camshaft format of the Thumpr Series promises you will be noticed. The retro fit hydraulic roller format ensures dependable performance and straightforward maintenance. Experience the blend of tradition and innovation with COMP Cams Thumpr Series in this Chevy 350 camshaft. 


SKU 12-602-8
Barcode # 036584148401
Lifters Included No
Camshaft Series Thumpr
Exhaust Duration At .050 Inch Lift 257
Advertised Exhaust Duration 319
intake valve lift 0.531
Camshaft Gear Attachment 3-Bolt
Basic Operating Rpm Range 2,500-6,200
Lobe Separation 107
Cam Type Hydraulic Roller
Lifter Type Hydraulic Roller
Valve Springs Required Yes
Grind Number 299THR7
Intake Duration At .050 Inch Lift 243
Advertised Intake Duration 299
Exhaust Valve Lift 0.517
Camshaft Material Austempered Ductile Iron


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