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Technical Articles for Part Number HRS-720555-10
Howards Cams Retrofit Hydraulic Roller Camshafts 720555-10
Part Number: HRS-720555-10
Howards Cams Retrofit Hydraulic Roller Camshafts
Camshaft, Retrofit, Hydraulic Roller Tappet, Advertised Duration 282/288, Lift .525/.525, Chrysler, Big Block
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Estimated Ship Date: Dec 30, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
720555-10
Part Type:
Product Line:
Summit Racing Part Number:
HRS-720555-10
UPC:
840793115372
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Fair idle, street performance/mild bracket, 2.500+ stall, 9.5:1+ compression ratio and aftermarket intake.
Basic Operating RPM Range:
2,000-6,000
Intake Duration at 050 inch Lift:
228
Exhaust Duration at 050 inch Lift:
234
Duration at 050 inch Lift:
228 int./234 exh.
Advertised Intake Duration:
282
Advertised Exhaust Duration:
288
Advertised Duration:
282 int./288 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.525 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.525 in.
Valve Lift with Factory Rocker Arm Ratio:
0.525 int./0.525 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Retrofit Hydraulic Roller Camshafts
Howards Cams retrofit hydraulic roller camshafts offer more lift and more power for less money. These street performance grinds are perfect for those wanting to upgrade to hydraulic roller cams. Manufactured using the highest grade race-quality cores, Howards precision-grinds their cams to provide the quality and performance that you want at a reasonable price. Overhaul your valvetrain for mild to wild street performance with Howards Cams retrofit hydraulic roller camshafts. Hundreds of models are available for a wide range of vehicles from the 1950s and up.
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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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