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Technical Articles for Part Number HRS-411391-08
Howards Cams Hydraulic Flat Tappet Camshafts 411391-08
Part Number: HRS-411391-08
Howards Cams Hydraulic Flat Tappet Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 294/301, Lift .503/.510, Pontiac, V8, Each
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Estimated Ship Date: Dec 28, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
411391-08
Part Type:
Product Line:
Summit Racing Part Number:
HRS-411391-08
UPC:
840793113675
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Rough idle, Hot Street/bracket. Nice upper midrange and top-end.
Basic Operating RPM Range:
3,000-6,800
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:
294
Advertised Exhaust Duration:
301
Advertised Duration:
294 int./301 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.503 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.510 in.
Valve Lift with Factory Rocker Arm Ratio:
0.503 int./0.510 exh.
Lobe Separation (degrees):
108
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Hydraulic Flat Tappet Camshafts
Howards Cams offers their hydraulic flat tappet camshafts in a variety of configurations and performance levels for street, strip, and oval track purposes. All their flat tappet cams meet strict requirements to ensure the highest quality (and many get packaged and shipped in their unique, reusable, high-impact-plastic cases to ensure the quality reaches your doorstep.) Get the profile you want—from mild and smooth to loud and rough—with the hydraulic flat tappet camshafts from Howards Cams designed for your 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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