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Technical Articles for Part Number HRS-CL417251-15
Howards Cams American Muscle Hydraulic Flat Tappet Camshaft and Lifter Kits CL417251-15
Part Number: HRS-CL417251-15
Howards Cams American Muscle Hydraulic Flat Tappet Camshaft and Lifter Kits
Camshaft and Lifter Kits, Hydraulic Flat Tappet, 1,800-5,400 RPM Range, 301/313, 115 Lobe Separation, 112 Intake Centerline, Pontiac V8, Kit
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Estimated Ship Date: Dec 30, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
CL417251-15
Part Type:
Product Line:
Summit Racing Part Number:
HRS-CL417251-15
UPC:
840793145706
Cam Style:
Hydraulic flat tappet
Basic Operating RPM Range:
1,800-5,400
Camshaft Use:
Street/Strip
Intake Duration at 050 inch Lift:
224
Exhaust Duration at 050 inch Lift:
236
Duration at 050 inch Lift:
224 int./236 exh.
Advertised Intake Duration:
301
Advertised Exhaust Duration:
313
Advertised Duration:
301 int./313 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.407 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.407 in.
Valve Lift with Factory Rocker Arm Ratio:
0.407 int./0.407 exh.
Lobe Separation (degrees):
115
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Mechanical flat tappet
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
No
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
No
Quantity:
Sold as a kit.
Notes:
Near duplicate of Pontiac Ram Air III 366HP/400 cam (GM #9785744). Firing order 1 8 4 3 6 5 7 2.
Howards Cams American Muscle Hydraulic Flat Tappet Camshaft and Lifter Kits
Value with high-quality—Howards Cams American Muscle hydraulic flat tappet camshaft and lifter kits offer the best choice for your muscle car and your wallet! They feature the highest-grade race-quality cores, ground in-house on dedicated high-precision cam grinding machines. Cams are 100 percent Rockwell checked and Parkerized to ensure optimum performance. Many are packaged and shipped in their unique, high-impact reusable plastic cases to guarantee the parts reach your doorstep safely. Add to that a matching set of premium lifters—and you have even more beef for your muscle! Put some brawn in your muscle car and your buying power with American Muscle hydraulic flat tappet camshaft and lifter kits from Howards Cams. They're available for a variety of year/make and engine applications.
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Some parts are not legal for use in California or other states with similar laws / regulations
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