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Technical Articles for Part Number HRS-721941-12
Howards Cams Hydraulic Flat Tappet Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 271/281, Lift .518/.543, Chrysler, Big Block, Each
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Estimated Ship Date: Nov 4, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
721941-12
Part Type:
Product Line:
Summit Racing Part Number:
HRS-721941-12
UPC:
840793115532
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Fair idle, Hot Street and mild bracket racing. Strong midrange.
Basic Operating RPM Range:
1,800-5,400
Intake Duration at 050 inch Lift:
224
Exhaust Duration at 050 inch Lift:
234
Duration at 050 inch Lift:
224 int./234 exh.
Advertised Intake Duration:
271
Advertised Exhaust Duration:
281
Advertised Duration:
271 int./281 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.518 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.543 in.
Valve Lift with Factory Rocker Arm Ratio:
0.518 int./0.543 exh.
Lobe Separation (degrees):
112
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Hydraulic Flat Tappet Camshafts
Howards Cams offers their hydraulic flat tappet camshafts in a variety of configurations and performance levels for street, strip, and oval track purposes. All their flat tappet cams meet strict requirements to ensure the highest quality (and many get packaged and shipped in their unique, reusable, high-impact-plastic cases to ensure the quality reaches your doorstep.) Get the profile you want—from mild and smooth to loud and rough—with the hydraulic flat tappet camshafts from Howards Cams designed for your application.
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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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