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Technical Articles for Part Number SUM-K8724R1
Summit Racing™ Pro LS Camshaft and Lifter kits SUM-K8724R1
Part Number: SUM-K8724R1
Summit Racing™ Pro LS Camshaft and Lifter kits
Cam and Lifter kit, Stage 4.5 Pro LS Twin-Turbo Cam. 242/248 Dur., 116+5, .625/.605 Lift, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0, Each
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Kit/Combo Contents
Summit Racing SUM-150132-4 - Summit Racing™ Lifter Guides
Lifter Guide, Hydraulic Roller Style, Plastic, Chevy, LS, Non AFM/DOD Engines, Set of 4
Kit Item Quantity: 1
Summit Racing SUM-8724R1 - Summit Racing™ Pro LS Twin Turbo Camshafts
Stage 4.5 Pro LS Twin-Turbo Cam. 242/248 Dur., 116+5, .625/.605 Lift, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0, Vortec Truck, LS1 LS2 LS6 LS3 LS7 LQ4 LQ9, Each
Kit Item Quantity: 1
Summit Racing SUM-HT215-16 - Summit Racing™ Performance LS7 Hydraulic Lifters
Lifters, Hydraulic Roller, 0.842 in O.D., Not for AFM-equipped Engines, Chevy, LS7, Delphi, Set of 16
Kit Item Quantity: 1
Overview
Brand:
Manufacturer's Part Number:
SUM-K8724R1
Part Type:
Product Line:
Summit Racing Part Number:
SUM-K8724R1
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
4,000-7,500
Camshaft Use:
Turbocharged
Camshaft Manufacturers Description:
The Summit Stage 4.5 Twin Turbo cam has an unmistakable lope and is designed for large Turbine/A.R. Twin-Turbo applications. More overlap and SUM-8723R1 which adds lope and open exhaust is required. It makes excellent mid-range and top-end power. Flycutting pistons is likely. This cam is stable at high rpm with 160lb. seat pressure and 400lb. open pressure. A 4000+ stall converter is recommended.
Intake Duration at 050 inch Lift:
242
Exhaust Duration at 050 inch Lift:
248
Duration at 050 inch Lift:
242 int./248 exh.
Advertised Intake Duration:
292
Advertised Exhaust Duration:
297
Advertised Duration:
292 int./297 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.625 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.605 in
Valve Lift with Factory Rocker Arm Ratio:
0.625 int./0.605 exh.
Lobe Separation (degrees):
116
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
Yes
Lifters Included:
Yes
Lifter Style:
Hydraulic roller
Valve Springs Included:
No
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
Yes
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
No
Valve Springs Required:
Yes
Quantity:
Sold as a kit.
Notes:
The Summit Stage 4.5 Twin Turbo cam has an unmistakable lope and is designed for large turbine/A.R. twin-turbo applications. Camshaft features base circle of 0.713 int./0.725 exh.
Summit Racing™ Pro LS Camshaft and Lifter kits
You won't find a better quality cam for your LS-based engine than our Summit Racing™ Pro LS series of cams. These convenient combo kits enable you to get the cam along with the correct matching lifters. Pro LS cam, lifters, and trays are included in one easy-to-order part number. Whether for street/strip, turbocharged, or racing use, you'll find the kit recommended for your year/make and engine application.
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Some parts are not legal for use in California or other states with similar laws / regulations
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