About this product
This Howards Cams CL128041-09 BBC Big Mama Rattler Hydraulic Flat Tappet Camshaft & Lifter Kit fits 396-502 cubic inch Big Block Chevy engines from 1965-1996. Howards designed this cam for Street and Drag Racing use, and it features a lopey idle. A 9.0:1 or higher compression ratio and a 2500+ stall speed torque converter are highly recommended.
Howards Cams CL128041-09 BBC Big Mama Rattler Hydraulic Flat Tappet Camshaft & Lifter Kit Specs:
- For Big Block Chevy 396-502 engines from 1965-1996
- Includes Camshaft 128041-09 and Lifter Set 91111
- Basic RPM Range: 2000 to 5900
- Valve Lift Intake: .553
- Valve Lift Exhaust: .545
- Intake Duration: 289
- Exhaust Duration: 297
- Intake Duration at .050”: 235
- Exhaust Duration at .050”: 243
- Lobe Separation: 109
- Intake Centerline: 103
- Firing Order: 1-8-4-3-6-5-7-2
- Made in the USA
Note: Stock (O.E.) valve springs can NOT be used
Howards Cams designed this Flat Tappet camshaft for high performance on the street and drag strip.
Howards Cams - For the ultimate in performance!
Description supplied by Winners Circle through its current Shopify listing. Product, performance, and health claims are the seller’s and have not been independently verified by StorkScout.






