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Technical Articles for Part Number HRS-CL120265-12
Howards Cams Retro-Fit Hydraulic Roller Camshaft and Lifter Kits CL120265-12
Part Number: HRS-CL120265-12
Howards Cams Retro-Fit Hydraulic Roller Camshaft and Lifter Kits
Cam and Lifters, Hydraulic Roller Tappet, Advertised Duration 290/296, Lift .634/.640, Chevy, Big Block, Kit
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Estimated Ship Date from OH, GA: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
CL120265-12
Part Type:
Product Line:
Summit Racing Part Number:
HRS-CL120265-12
UPC:
840793128143
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
2,600-6,500
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Lopey idle, hot street and bracket racing. 10.0:1 compression ratio or higher recommended.
Intake Duration at 050 inch Lift:
237
Exhaust Duration at 050 inch Lift:
243
Duration at 050 inch Lift:
236 int./242 exh.
Advertised Intake Duration:
290
Advertised Exhaust Duration:
296
Advertised Duration:
290 int./296 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.634 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.640 in.
Valve Lift with Factory Rocker Arm Ratio:
0.634 int./0.640 exh.
Lobe Separation (degrees):
112
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
Howards Cams Retro-Fit Hydraulic Roller Camshaft and Lifter Kits
Get more for your dollar with Howards Cams Retro-Fit hydraulic roller camshaft and lifter kits. You'll get more lift and power for less money with these street performance grinds. They're perfect for those wanting to upgrade to hydraulic roller cams. Howards manufactures their cams using the highest grade race-quality cores and precision-grinds their cams to provide the quality and performance that you want at a reasonable price. They've matched these hydraulic cams with a perfect set of their premium lifters. Overhaul your valvetrain for mild to wild street performance with Howards Cams Retro-Fit hydraulic roller camshaft and lifter kits.
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Some parts are not legal for use in California or other states with similar laws / regulations
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