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Technical Articles for Part Number HRS-122121-12
Howards Cams Street Force 3 Hydraulic Flat Tappet Camshafts 122121-12
Part Number: HRS-122121-12
Howards Cams Street Force 3 Hydraulic Flat Tappet Camshafts
Camshaft, Street Force 3, Hydraulic Flat Tappet, Advertised Duration 279/289, Lift .527/.533, Chevy, Big Block, Each
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Estimated Ship Date from Texas: Today Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
122121-12
Part Type:
Product Line:
Summit Racing Part Number:
HRS-122121-12
Item Number:
3250047
UPC:
840793133079
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
1,600-6,000
Intake Duration at 050 inch Lift:
225
Exhaust Duration at 050 inch Lift:
235
Duration at 050 inch Lift:
225 int./235 exh.
Advertised Intake Duration:
279
Advertised Exhaust Duration:
289
Advertised Duration:
279 int./289 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.527 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.533 in.
Valve Lift with Factory Rocker Arm Ratio:
0.527 int./0.533 exh.
Lobe Separation (degrees):
112
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
No
Quantity:
Sold individually.
Howards Cams Street Force 3 Hydraulic Flat Tappet Camshafts
Howards Cams Street Force 3 hydraulic flat tappet camshafts are engineered for the street performance enthusiast, but also work well for mild bracket racing. The specially designed grinds were created to provide a noticeable idle and strong throttle response. This series of camshafts require the use of an improved intake manifold, 4-barrel carburetor, free-flow exhaust, and 2,200 to 2,500 stall rpm torque converter. Upgrading your ignition system and a utilizing a 3.20 to 3.90 gear ratio will provide additional performance. Street Force 3 camshafts also feature 112 degree lobe separations to help maintain vacuum. They're available for a variety of year/make and engine applications. When it comes to street performance, Howards Cams is the preferred choice.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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