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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 3 needs a street 2200-2500 stall converter, improved intake and dual exhaust. 3.20 to 3.90 gear ratio and a good ignition system will give you additional performance.
Note: Some applications may require a vacuum canister or pump.
Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
Rockwell Tested & Parkerized Ensuring the Highest Quality
Part Type: Camshaft
Application: Chevrolet SB LA 273, 340, 360 1964-2003, 318 1967-1991
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 1600-5800
Manufacturers Description: Street Force 3, Noticeable idle, hot street & mild bracket racing.
Intake Duration @ .050": 225
Exhaust Duration @ .050": 235
Advertised Intake Duration (@ .006"): 279
Advertised Exhaust Duration (@ .006"): 289
Intake Valve Lift with OE Rocker Ratio (1.50): .465"
Exhaust Valve Lift with OE Rocker Ratio (1.50): .470"
Intake Lobe Lift: .310"
Exhaust Lobe Lift: .313"
Intake Valve Lift with 1.55 Rocker Ratio: .480"
Intake Valve Lift with 1.60 Rocker Ratio: .496"
Intake Valve Lift with 1.65 Rocker Ratio: .511"
Exhaust Valve Lift with 1.55 Rocker Ratio: .485"
Exhaust Valve Lift with 1.60 Rocker Ratio: .501"
Exhaust Valve Lift with 1.65 Rocker Ratio: .516"
Lobe Separation Angle: 112 Degrees
Intake Centerline: 108 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus 1/2 Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 712121-12
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Oil with ZDDP or ZDDP Additive Required
Note: Stock (O.E.) valve springs can not be used.
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