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Technical Articles for Part Number HRS-221613-08
Howards Cams Steel Billet Mechanical Roller Camshafts 221613-08
Part Number: HRS-221613-08
Howards Cams Steel Billet Mechanical Roller Camshafts
Camshaft, Mechanical Roller Tappet, Advertised Duration 299/303, Lift .672/.667, Ford, 351W, Each
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Overview
Brand:
Manufacturer's Part Number:
221613-08
Part Type:
Product Line:
Summit Racing Part Number:
HRS-221613-08
UPC:
840793110636
Cam Style:
Solid roller, Retro-fit
Camshaft Use:
Circle Track/Drag Race
Camshaft Manufacturers Description:
Long oval track or bracket E.T. drag, good upper rpm horsepower. 12.5:1+ compression ratio.
Basic Operating RPM Range:
4,200-7,800
Intake Duration at 050 inch Lift:
267
Exhaust Duration at 050 inch Lift:
271
Duration at 050 inch Lift:
267 int./271 exh.
Advertised Intake Duration:
299
Advertised Exhaust Duration:
303
Advertised Duration:
299 int./303 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.672 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.667 in.
Valve Lift with Factory Rocker Arm Ratio:
0.672 int./0.667 exh.
Lobe Separation (degrees):
108
Camshaft Gear Attachment:
1-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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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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