COMP CAM 11-602-4 BIG MUTHA THUMPR 243/257 Hydraulic Camshaft Kit | HP Lifters | Double Roller Timing | Push Rods | LIFT: .522/.507 | FITS: Chevy BBC Big Block 454 7.4L 1970-1990 | Very Rough Idle
$485.00
Brand: REDLINE ENGINE SUPPLY
Condition: New
– THIS IS A COMP CAM & ENGINETECH KIT ASSEMBLED BY OUR EXPERT ENGINEERS TO CREATE THE HIGHEST QUALITY CAMSHAFT KIT AT AN AFFORDABLE PRICE. EVERY PART IN THIS KIT HAS A HIGH-PERFORMANCE SPEC RATING AND IS GUARANTEED TO BE OF THE HIGHEST OF QUALITY AND PERFORMANCE. WE BELIEVE IN THE QUALITY OF THESE PARTS SO MUCH THAT WE OFFER A LIFETIME WARRANTY IF INSTALLED BY A CERTIFIED MACHINIST.
– The Legendary “Big Mutha” Sound (107 LSA): Utilizing a tight 107-degree Lobe Separation Angle, this cam creates the most violent, heavy-loping idle in the entire Thumpr lineup. Why Buy It: It sounds exactly like a high-compression solid roller race engine. If you want to shake the ground at the stoplight and be the loudest car at the show, this is the only cam that delivers that level of intimidation.
– Massive High-RPM Specs (243/257 Duration): With a staggering duration of 243 Int / 257 Exh @ .050”, this cam is built to scream from 2,500 to 6,200+ RPM. Why Buy It: Unlike smaller cams that fall flat, this profile pulls relentlessly hard at the top end, making it the ultimate weapon for bracket racing or street cars that need to outrun the competition on the highway.
– 1) COMP CAM 11-602-4 BIG MUTHA THUMPR 243/257 HYDRAULIC CAMSHAFT – 2,300-6,200 RPM OPERATING RANGE. VALVE LIFT: 0.522″/0.507″. 243/257 DURATION AT 0.050″. 107 LOBE SEPARATION.
– (16) ENGINETECH HIGH-PERFORMANCE HYDRAULIC LIFTERS
- 2 years warranty
- Delivery time: 1-2 business days
- Free 90 days return
Description
Description
This is the undisputed king of flat tappet attitude. The Competition Cams 11-602-4 Big Mutha Thumpr is designed for the Big Block Chevy (Mark IV 396-454) owner who wants absolute domination at the cruise-in and the drag strip. If you are building a Pro-Street Chevelle, a radical hot rod, or a 454 truck that needs to sound like a 9-second race car, this is the camshaft that delivers the earth-shaking idle and top-end power you are chasing. It is not for the faint of heart—it is for the builder who wants the loudest, roughest, and most powerful hydraulic flat tappet setup available.
The specifications of the 11-602-4 are massive. Competition Cams engineered this grind with a staggering Duration @ .050 of 243 intake and 257 exhaust, paired with a high-performance valve lift of .522”/.506”. This huge duration profile keeps the valves open longer to feed your Big Block massive amounts of air and fuel at high RPMs. Unlike smaller cams that run out of breath, the Big Mutha Thumpr is just getting started at 3,000 RPM and pulls violently all the way to 6,200+ RPM. It is designed to maximize the potential of aftermarket aluminum heads, single-plane intakes, and large-tube headers.
What does it sound and feel like? Radical. The signature tight 107-degree Lobe Separation Angle (LSA) combined with the massive overlap creates an idle that shakes the fenders. It sounds incredibly “nasty,” with a deep, chopping rhythm that mimics a solid roller race engine. On the street, the driving feel is raw and aggressive. It creates very little engine vacuum, meaning you MUST run a high-stall torque converter (2,800+ RPM recommended) and deep rear-end gears (3.73-4.56) to get the vehicle moving. Once you are in the power band, however, the torque is relentless.
Why should you buy the 11-602-4? Because you want the maximum “Wow Factor” for your dollar. You are getting a precision-ground Competition Cams component that offers the audio profile and top-end charge of a race cam, but with the maintenance-free reliability of a hydraulic lifter system. If you have the compression, the gears, and the converter to support it, this cam offers an experience that no other flat tappet can match. Install the Big Mutha Thumpr and guarantee that you are the loudest car on the block.
Manufacturer: COMP CAM / ENGINETECH
Model: BIG MUTHA THUMPR 243/257
Included components: 1-CAMSHAFT 16-LIFTERS 1-TIMING SET 16-PUSH RODS
Warranty: LIFETIME – IF INSTALLED BY A CERTIFIED MACHINIST
Additional information
Additional information
| Brand | REDLINE ENGINE SUPPLY |
|---|---|
| Condition | New |
| Manufacturer | COMP CAM / ENGINETECH |
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