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Instruction Sheets for Part Number EDL-2261
Technical Articles for Part Number EDL-2261
Edelbrock Rollin' Thunder Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller Tappet, Advertised Duration 335/339, Lift .625/.639, Chevy, Big Block, Each
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Overview
Brand:
Manufacturer's Part Number:
2261
Part Type:
Product Line:
Summit Racing Part Number:
EDL-2261
UPC:
085347022618
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street
Basic Operating RPM Range:
1,500-6,500
Intake Duration at 050 inch Lift:
236
Exhaust Duration at 050 inch Lift:
245
Duration at 050 inch Lift:
236 int./245 exh.
Advertised Intake Duration:
335
Advertised Exhaust Duration:
339
Advertised Duration:
335 int./339 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.625 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.639 in.
Valve Lift with Factory Rocker Arm Ratio:
0.625 int./0.639 exh.
Lobe Separation (degrees):
112
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Camshaft requires the use of either a melonized or cast iron distributor gear.
Edelbrock Rollin' Thunder Hydraulic Roller Camshafts
Make some noise with Edelbrock Rollin' Thunder hydraulic roller camshafts. Designed to improve horsepower and torque, they feature more aggressive profiles than conventional flat-tappet hydraulic cams without excessive valve overlap. Recommended for high performance street and strip use, Edelbrock Rollin' Thunder hydraulic roller camshafts work best from 1,500 to 6,500 rpm and are performance matched to Edelbrock Total Power Package components for proven performance.
Features Include:
* Performance--roller camshafts generate higher lift velocity and faster valve action for increased horsepower and torque gains
* Drivability--produces great sounding idle with excellent vacuum at idle
* Durability--the smaller surface contact area of roller tappets and their reduced friction, together with stronger camshaft material (hardened steel or iron) ensures longer camshaft life
* Environmental--can use ILSAC GF-4 oil, which lowers emissions and does not require zinc or phosphate oil additives
* Economy--reduced contact friction between the lifter and camshaft can increase fuel economy for better mileage
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Some parts are not legal for use in California or other states with similar laws / regulations
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