Howards Cams 121683-10 BBC Solid Roller Camshaft

This Howards Cams 121683-10 BBC Steel Billet Solid Roller Camshaft is designed for street/strip use with a 496+ CID engine and nitrous oxide, and it has a lopey idle. A 11.0:1 or higher compression ratio and a 4800+ stall speed torque converter is highly recommended. 

Howards Cams 121683-10 BBC Steel Billet Solid Roller Camshaft Specs:

• For 496+ cubic inch Big Block Chevy engines
• Requires Thrust Button
• Requires upgraded distributor gear/fuel pump pushrod
• Basic RPM Range: 4500 to 8000
• Valve Lift Intake: .771
• Valve Lift Exhaust: .737
• Intake Duration: 311
  
• Exhaust Duration: 319
• Intake Duration at .050”: 279
• Exhaust Duration at .050”: 287
• Lobe Separation: 110
• Intake Centerline: 106
• 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 solid roller camshaft for high performance with nitrous oxide on the street and drag strip.

Howards Roller Cams – From mild to wild, they are the ultimate in performance!