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Technical Articles for Part Number HRS-720581-10
Howards Cams Hydraulic Flat Tappet Camshafts 720581-10
Part Number: HRS-720581-10
Howards Cams Hydraulic Flat Tappet Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 277/283, Lift .531/.547, Chrysler, Big Block, Each
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Estimated Ship Date: Nov 9, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
720581-10
Part Type:
Product Line:
Summit Racing Part Number:
HRS-720581-10
Item Number:
1724277
UPC:
840793115396
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Lopey idle, strong midrange. Good throttle response, 2,400+ stall.
Basic Operating RPM Range:
2,400-6,200
Intake Duration at 050 inch Lift:
230
Exhaust Duration at 050 inch Lift:
236
Duration at 050 inch Lift:
230 int./236 exh.
Advertised Intake Duration:
277
Advertised Exhaust Duration:
283
Advertised Duration:
277 int./283 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.531 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.547 in.
Valve Lift with Factory Rocker Arm Ratio:
0.531 int./0.547 exh.
Lobe Separation (degrees):
110
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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