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Technical Articles for Part Number HRS-770665-10
Howards Cams Hydraulic Roller Camshafts
Cam, SB Chry Magnum, Hyd Roller
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Estimated Ship Date: Dec 31, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
770665-10
Part Type:
Product Line:
Summit Racing Part Number:
HRS-770665-10
UPC:
840793135141
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Rough idle, pro street/strip. Needs 10.0:1+ compression ratio, 2800+ stall and at least 4.10 gears.
Basic Operating RPM Range:
2,800-6,500
Intake Duration at 050 inch Lift:
241
Exhaust Duration at 050 inch Lift:
247
Duration at 050 inch Lift:
241 int./247 exh.
Advertised Intake Duration:
294
Advertised Exhaust Duration:
300
Advertised Duration:
294 int./300 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.581 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.587 in.
Valve Lift with Factory Rocker Arm Ratio:
0.581 int./0.587 exh.
Lobe Separation (degrees):
110
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Hydraulic Roller Camshafts
Howards Cams hydraulic roller camshafts are offered in a wide variety of profiles, from mild to wild. These units are precision-ground from race-quality cores, in-house, on dedicated cam-grinding machines. Each Howards Cams hydraulic roller camshaft is manufactured to the highest quality standards. Order the model designed for your vehicle and engine 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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