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Technical Articles for Part Number HRS-120183-10
Howards Cams Steel Billet Mechanical Roller Camshafts 120183-10
Part Number: HRS-120183-10
Howards Cams Steel Billet Mechanical Roller Camshafts
Camshaft, Mechanical Roller Tappet, Advertised Duration 269/275, Lift .629/.629, Chevy, Big Block, Each
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Estimated Ship Date: Dec 21, 2026 Would you rather pick it up?
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Howards Cams Steel Billet Mechanical Roller Camshafts 121133-14
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Estimated Ship Date: Monday 10/19/2026
Overview
Brand:
Manufacturer's Part Number:
120183-10
Part Type:
Product Line:
Summit Racing Part Number:
HRS-120183-10
UPC:
840793105052
Cam Style:
Solid roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Mild rough idle, street performance/Power Touring. Reliable low to midrange power.
Basic Operating RPM Range:
2,600-6,600
Intake Duration at 050 inch Lift:
237
Exhaust Duration at 050 inch Lift:
243
Duration at 050 inch Lift:
237 int./243 exh.
Advertised Intake Duration:
269
Advertised Exhaust Duration:
275
Advertised Duration:
269 int./275 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.629 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.629 in.
Valve Lift with Factory Rocker Arm Ratio:
0.629 int./0.629 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Intake Valve Lash:
0.022 in.
Exhaust Valve Lash:
0.022 in.
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Steel Billet Mechanical Roller Camshafts
Howards Cams steel billet mechanical roller camshafts are serious cams for serious performance. Cut from billet steel these high-grade, race-quality mechanical roller cams from Howards are ground on precision equipment to ensure awesome performance. Mechanical roller cams offer aggressive power for all-out competition. They're billet, they're Howards, and they're serious-- mechanical roller camshafts!
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Some parts are not legal for use in California or other states with similar laws / regulations
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