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Technical Articles for Part Number HRS-410021-12
Howards Cams Street Force 2 Hydraulic Flat Tappet Camshafts 410021-12
Part Number: HRS-410021-12
Howards Cams Street Force 2 Hydraulic Flat Tappet Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 267/277, Lift .450/.450, Pontiac, V8, Each
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Estimated Ship Date: Jan 12, 2027 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
410021-12
Part Type:
Product Line:
Summit Racing Part Number:
HRS-410021-12
Item Number:
1665346
UPC:
840793113552
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Super low and midrange torque. Excellent drivability.
Basic Operating RPM Range:
1,500-5,800
Intake Duration at 050 inch Lift:
213
Exhaust Duration at 050 inch Lift:
223
Duration at 050 inch Lift:
213 int./223 exh.
Advertised Intake Duration:
267
Advertised Exhaust Duration:
277
Advertised Duration:
267 int./277 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.450 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.450 in.
Valve Lift with Factory Rocker Arm Ratio:
0.450 int./0.450 exh.
Lobe Separation (degrees):
112
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Street Force 2 Hydraulic Flat Tappet Camshafts
Howards Cams Street Force 2 hydraulic flat tappet camshafts are engineered for the street performance enthusiast. The specially designed grinds were created to provide a good idle and increased throttle response. This series of camshafts work best with an improved intake manifold, 4-barrel carburetor, free-flow exhaust, and 1,600 to 1,800 stall rpm torque converter. Street Force 2 models also feature 112 degree lobe separations to help maintain vacuum. The cams are available for a wide variety of year/make and engine applications. Street performance begins with Howards Cams!
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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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