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Howards Cams, Street Force Hydraulic Flat Tappet Camshaft, Buick 400-430-455 |
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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 2 are designed for engines with improved intake and exhaust. Ignition improvements along with 1600-1800 torque converter really wakes this combo up.
Note: Some applications may require a vacuum canister or pump.
Part Type: Camshaft
Cam Series: Street Force
Application: Buick 400-430-455 1967-1976
Ignition Firing Order: (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet Camshaft
Basic RPM Range: 1200-5200
Manufacturers Description: Street Force 2, good idle & throttle response, needs 4 barrel & good exhaust.
Intake Duration @ .050": 215
Exhaust Duration @ .050": 225
Advertised Intake Duration (@ .050"): 269
Advertised Exhaust Duration (@ .050"): 279
Intake Valve Lift with OE Rocker Ratio (1.60): .474"
Exhaust Valve Lift with OE Rocker Ratio (1.60): .496"
Intake Lobe Lift: .296"
Exhaust Lobe Lift: .310"
Intake Valve Lift with 1.65 Rocker Ratio: .489"
Intake Valve Lift with 1.70 Rocker Ratio: .504"
Intake Valve Lift with 1.72 Rocker Ratio: .509"
Exhaust Valve Lift with 1.65 Rocker Ratio: .512"
Exhaust Valve Lift with 1.70 Rocker Ratio: .527"
Exhaust Valve Lift with 1.72 Rocker Ratio: .533"
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: 550121-12
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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