About this product
This Howards Cams CL121721-12 BBC Hydraulic Flat Tappet Camshaft and Lifter Kit fits 396-502 cubic inch Mark IV Big Block Chevy engines from 1965-1996. Howards designed this cam for street/strip use, and it features broad mid-range to upper end performance and a good idle. A 9.5:1+ compression ratio, lower rear end gears and a 2900+ stall speed torque converter are highly recommended.
Howards Cams CL121721-12 BBC Hydraulic Flat Tappet Camshaft and Lifter Kit Specs:
- For Big Block Chevy 396-502 engines from 1965-1996
- Includes Camshaft 121721-12 and Lifter Set 91111
- Basic RPM Range: 2500 to 6800
- Valve Lift Intake: .570
- Valve Lift Exhaust: .578
- Intake Duration: 294
- Exhaust Duration: 301
- Intake Duration at .050”: 241
- Exhaust Duration at .050”: 247
- Lobe Separation: 112
- Intake Centerline: 108
- Firing Order: 1-8-4-3-6-5-7-2
- Made in the USA
Notes: Stock (O.E.) valve springs can NOT be used.
Howards Cams designed this Flat Tappet Hydraulic camshaft for high performance on the street and on the drag strip.
Howards Hydraulic Cams – From mild to wild, they are 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.
