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Technical Articles for Part Number CCA-54-601-11
COMP Cams Thumpr Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller Tappet, Advertised Duration 283/303, Lift .563/.546, Chevy, Small Block, LS
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Overview
Brand:
Manufacturer's Part Number:
54-601-11
Part Type:
Product Line:
Summit Racing Part Number:
CCA-54-601-11
UPC:
036584195177
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Street/Strip
Basic Operating RPM Range:
2,300-6,600
Intake Duration at 050 inch Lift:
227
Exhaust Duration at 050 inch Lift:
241
Duration at 050 inch Lift:
227 int./241 exh.
Advertised Intake Duration:
283
Advertised Exhaust Duration:
303
Advertised Duration:
283 int./303 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.563 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.546 in.
Valve Lift with Factory Rocker Arm Ratio:
0.563 int./0.546 exh.
Lobe Separation (degrees):
109
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
Yes
Grind Number:
283THR9
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Cannot use stock springs. Stall converter 2500 and up, 9:1 compression, gears and headers are recommended. Custom computer tuning required.
COMP Cams Thumpr Hydraulic Roller Camshafts
COMP Cams has awakened the muscle car sound--and it is nastier than ever! Thumpr Series camshafts is a line of cutting-edge hydraulic roller camshafts for engines originally equipped with flat tappet cams. With them, you can expect a substantial power increase without sacrificing reliability or ease of maintenance! The lobe profile and grind characteristics of Thumpr cams include blending an early exhaust valve opening, a long exhaust duration, and a generous amount of intake and exhaust overlap. This maximizes rough-idling tendencies, delivering a seriously aggressive exhaust note without affecting engine power output. Thumpr camshafts are available in a variety of grind profiles, each producing impressive horsepower and torque performance within a different rpm range.
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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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