Howards Cams, Street Force, Hydraulic Flat Tappet Camshaft, Ford Small Block 351W |
| Item Number: HRC220021-12 |
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Howards Cams Street Force Hydraulic Flat Tappet Camshaft
Designed for the street performance enthusiast. They feature true street performance with little or no added maintenance. These grinds feature lobes designed to be easy on the valvetrain, and add useable torque, horsepower and throttle response. They also have 112 degree lobe separations to help maintain vacuum. Street Force 1 cams are great for engines with minor or no additional improvements. A good dual plane intake and dual exhaust is great for additional performance.
Note: Some applications may require a vacuum canister or pump.
Part Type: Camshaft
Cam Series: Street Force
Application: Ford Small Block 351W 1969-1996
Ignition Firing Order: OE (1-3-7-2-6-5-4-8)
Cam Style: Hydraulic Flat Tappet Camshaft
Basic RPM Range: 1000-5000
Manufacturers Description: Street Force 1, good idle, mild street performance, strong low end torque.
Intake Duration @ .050": 205
Exhaust Duration @ .050": 213
Advertised Intake Duration (@ .050"): 259
Advertised Exhaust Duration (@ .050"): 267
Intake Valve Lift with OE Rocker Ratio (1.60): .448"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .480"
Intake Lobe Lift: .280"
Exhaust Lobe Lift: .300"
Intake Valve Lift with 1.65 Rocker Ratio: .462"
Intake Valve Lift with 1.70 Rocker Ratio: .476"
Intake Valve Lift with 1.72 Rocker Ratio: .482"
Exhaust Valve Lift with 1.65 Rocker Ratio: .495"
Exhaust Valve Lift with 1.70 Rocker Ratio: .510"
Exhaust Valve Lift with 1.72 Rocker Ratio: .516"
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 1/2 Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 220021-12
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. |
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