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Technical Articles for Part Number CCA-K33-601-11
COMP Cams Mutha Thumpr Hydraulic Roller Cam and Lifter Kits K33-601-11
Part Number: CCA-K33-601-11
COMP Cams Mutha Thumpr Hydraulic Roller Cam and Lifter Kits
Camshaft Kits, Mutha Thumpr Hydraulic Roller Cam and Lifter Kits, Retro-fit, Advertised Duration 291/311, Lift 0.567/0.551, Ford, Big Block FE, Kit
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Overview
Brand:
Manufacturer's Part Number:
K33-601-11
Part Type:
Product Line:
Summit Racing Part Number:
CCA-K33-601-11
UPC:
036584381389
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
2,200-5,900
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
High performance street/strip, needs 9:1 compression, 2500+ stall, intake, gears and headers, rough idle.
Intake Duration at 050 inch Lift:
235
Exhaust Duration at 050 inch Lift:
249
Duration at 050 inch Lift:
235 int./249 exh.
Advertised Intake Duration:
291
Advertised Exhaust Duration:
311
Advertised Duration:
291 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.567 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.551 in.
Valve Lift with Factory Rocker Arm Ratio:
0.567 int./0.551 exh.
Lobe Separation (degrees):
107
Camshaft Gear Attachment:
1-bolt
Grind Number:
291THR7
Computer-Controlled Compatible:
No
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
Yes
Valve Spring Style:
Standard
Outside Diameter of Outer Spring (in.):
1.509 in.
Retainers Included:
Yes
Locks Included:
Yes
Valve Stem Seals Included:
Yes
Timing Chain and Gears Included:
Yes
Timing Chain Style:
Double roller
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
No
Quantity:
Sold as a kit.
COMP Cams Mutha Thumpr Hydraulic Roller Cam and Lifter Kits
COMP Cams offers Mutha Thumpr hydraulic roller cam and lifter kits for a variety of applications, including many Ford and Oldsmobile engines from the 1960s, '70, '80s, and '90s. These rough-idle replacements are ideal for high performance street/strip use. They need 9:1 compression, 2,500+ stall, intake, gears and headers. Kit includes camshaft, lifters, assembly lube, decals and instructions. Get the sound and performance you want with COMP Cams products.
* Product background info:
Frequently used in today's OEM factory engines and mild to moderately aggressive performance engines, hydraulic roller cams use lifters equipped with a roller wheel that tracks along the camshaft lobe, reducing wear and friction, and enabling faster lobe ramp rates than flat tappet cams.
Applications
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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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