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Technical Articles for Part Number HRS-218061-09
Howards Cams Big Mama Rattler Camshafts
Cam, Ford SB, Hyd Flat Tappet
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ Classic Camshaft for Ford 351W or SBF with Firing Order 1-3-7-2-6-5-4-8 SUM-4400
Estimated Ship Date: Today
Overview
Brand:
Manufacturer's Part Number:
218061-09
Part Type:
Product Line:
Summit Racing Part Number:
HRS-218061-09
UPC:
840793133703
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
Lopey idle, street or street/strip. Needs 9.0:1+ compression and 2500+ stall converter.
Basic Operating RPM Range:
2,000-5,900
Intake Duration at 050 inch Lift:
235
Exhaust Duration at 050 inch Lift:
243
Duration at 050 inch Lift:
235 int./243 exh.
Advertised Intake Duration:
289
Advertised Exhaust Duration:
297
Advertised Duration:
289 int./297 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.501 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.480 in.
Valve Lift with Factory Rocker Arm Ratio:
0.501 int./0.480 exh.
Lobe Separation (degrees):
109
Camshaft Gear Attachment:
1-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Howards Cams Big Mama Rattler Camshafts
Howards Cams offers Big Mama Rattler camshafts for a wide range of Chevrolet and Ford applications. Rattler cams are ideal for street enthusiasts who want the classic exhaust sound—but also want true performance to go with it. These units deliver Lopey idle and throttle response you expect from a performance cam. Big Mama Rattlers provide the best of both worlds: sound and performance for street or street/strip applications. (Note: For the best exhaust note, you should use a good dual exhaust system without a crossover. A crossover will add minor performance, but mellow the exhaust tone.) Best with lower gears.
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Some parts are not legal for use in California or other states with similar laws / regulations
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