Howards Cams Mechanical Roller Camshaft
Designed specifically for the nitrous oxide applications. These camshafts have camshaft lobes matched to the application to give you the best performance and horsepower. Most applications are designed for good power and throttle response without the nitrous, but give you big gains when the nitrous oxide is engaged. Grinds available for small plate systems to big multi-stage port injected systems.
Part Type: Camshaft
Cam Series: Big Bottle Cams
Application: Ford Small Block 221-302 1963-1995
Ignition Firing Order: OE (1-3-7-2-6-5-4-8)
Cam Style: Nitrous Oxide Mechanical Roller Camshaft
Basic RPM Range: 4200-8000
Manufacturers Description: Competition with large plate system. Good mid to upper range, 12.0:1+ CR.
Intake Duration @ .050": 267
Exhaust Duration @ .050": 277
Advertised Intake Duration (@ .050"): 299
Advertised Exhaust Duration (@ .050"): 309
Intake Valve Lift with OE Rocker Ratio (1.60): .688"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .693"
Intake Lobe Lift: .430"
Exhaust Lobe Lift: .433"
Intake Valve Lift with 1.65 Rocker Ratio: .709"
Intake Valve Lift with 1.70 Rocker Ratio: .731"
Intake Valve Lift with 1.72 Rocker Ratio: .739”
Exhaust Valve Lift with 1.65 Rocker Ratio: .715"
Exhaust Valve Lift with 1.70 Rocker Ratio: .736"
Exhaust Valve Lift with 1.72 Rocker Ratio: .741”
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Small Base Circle: No
Lifters Included: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ½ Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 220673-12
Weight: 14.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Stock (O.E.) valve springs cannot be used.
Note: Requires upgraded distributor gear.
Note: Ignition firing order must be changed to 1-3-7-2-6-5-4-8.