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Technical Articles for Part Number HRS-120173-08
Howards Cams Steel Billet Mechanical Roller Camshafts 120173-08
Part Number: HRS-120173-08
Howards Cams Steel Billet Mechanical Roller Camshafts
Camshaft, Mechanical Roller Tappet, Advertised Duration 273/279, Lift .646/.646, Chevy, Big Block, Each
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
120173-08
Part Type:
Product Line:
Summit Racing Part Number:
HRS-120173-08
UPC:
840793105014
Cam Style:
Solid roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Lopey idle, street/mild bracket. Good lower midrange, 10.0:1+ compression ratio. 2,800+ stall.
Basic Operating RPM Range:
2,800-6,800
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:
273
Advertised Exhaust Duration:
279
Advertised Duration:
273 int./279 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.646 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.646 in.
Valve Lift with Factory Rocker Arm Ratio:
0.646 int./0.646 exh.
Lobe Separation (degrees):
108
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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