Comp Cam 12-601-8 Mutha’ Thumpr Hydraulic Roller Camshaft Kit w/Redline HP Retro-Fit Lifters for Chevy SBC 283 305 327 350 400 Thumping Idle Street($949.00Value)

Description

LIFETIME WARRANTY IF INSTALLED BY A CERTIFIED MACHINIST Full Performance Cam & Lifter Kit – Includes the Competition Cams 12-601-8 Mutha’ Thumpr hydraulic roller camshaft and Redline Performance Retro-Fit link-bar hydraulic roller lifters for Chevy SBC 283, 305, 327, 350, and 400 engines. Exact Camshaft Specs That Deliver – 235° intake / 249° exhaust duration @ .050", .521" intake / .507" exhaust lift, and a 107° Lobe Separation Angle for massive torque, fast valve motion, and the aggressive sound every enthusiast wants. Powerband You Can Feel – Operating range of 2,200–5,900 RPM with instant throttle response, explosive midrange torque, and a strong top-end pull that keeps your Chevy pulling hard through every gear. The Famous Mutha’ Thumpr Sound – Tight 107° LSA and long exhaust duration create the unmistakable deep, rough idle that turns heads — a true race-inspired lope for street and strip machines. Retro-Fit Lifters Included – Redline Performance link-bar roller lifters drop right into older non-roller SBC blocks with no machining needed. Modern roller reliability meets classic small-block power. Built for Serious Performance Builders – Designed for engines running 9.5:1+ compression, aluminum heads, headers, and 2,500+ stall converters. Delivers both attitude and horsepower. Why You Should Buy This Kit – You’re not just buying a camshaft — you’re buying the heartbeat of your build. The Mutha’ Thumpr kit transforms a mild SBC into a torque-rich, lopey-idle monster that sounds and performs like a pro-built engine. Give your Chevy small block the attitude, torque, and sound it deserves with the Competition Cams 12-601-8 Mutha’ Thumpr Hydraulic Roller Camshaft Kit and Redline Performance Retro-Fit Lifters. This combo is designed for builders who want a street car that sounds like a race car — and has the torque to back it up. The heart of the package is the Mutha’ Thumpr 12-601-8 camshaft, built with 235° intake / 249° exhaust duration @ .050", .521"/.507" lift, and a tight 107° Lobe Separation Angle. These specs aren’t just numbers — they’re the secret behind the Mutha’ Thumpr’s personality. The extended duration and narrow LSA create aggressive valve overlap, producing the deep, choppy idle COMP’s Thumpr series is famous for. At the same time, the cam builds high cylinder pressure and airflow velocity, creating explosive mid-range torque and hard-pulling top-end power from 2,200 to 5,900 RPM. This cam loves engines with 9.5:1+ compression, performance heads, headers, and a 2,500+ stall converter — the perfect combo for street/strip builds that need attitude without losing reliability. The included Redline Performance Retro-Fit Link-Bar Hydraulic Roller Lifters make installation simple. They drop right into older non-roller SBC blocks — giving you the performance and reliability of modern roller technology. When you fire up your car, you’ll know immediately why it’s called the Mutha’ Thumpr. The idle is pure muscle — deep, choppy, and powerful — while the torque surge hits hard and keeps pulling all the way to redline. Whether you’re running a Camaro, Chevelle, Nova, C10, or custom hot rod, this camshaft kit delivers the look, sound, and performance that define real American horsepower.