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Technical Articles for Part Number SUM-K8703
Summit Racing™ Pro LS Camshaft and Lifter kits SUM-K8703
Part Number: SUM-K8703
Summit Racing™ Pro LS Camshaft and Lifter kits
Cam and Lifter kit, Summit Racing™ Stage 4 Pro LS Single Plane Cam, 240/252 106 +0, .569 Lift, LS1 LS2 LS6 LS3 LS7 LQ4, Each
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Overview
Brand:
Manufacturer's Part Number:
SUM-K8703
Part Type:
Product Line:
Summit Racing Part Number:
SUM-K8703
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
2,500-6,500
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Summit Stage 4 Single Plane cam has an extremely aggressive lope and works best in larger cubic inch engines with open headers. Pistons with valve reliefs will be required.
Intake Duration at 050 inch Lift:
240
Exhaust Duration at 050 inch Lift:
252
Duration at 050 inch Lift:
240 int./252 exh.
Advertised Intake Duration:
299
Advertised Exhaust Duration:
311
Advertised Duration:
299 int./311 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.569 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.569 in.
Valve Lift with Factory Rocker Arm Ratio:
0.569 int./0.569 exh.
Lobe Separation (degrees):
106
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:
Not for AFM or VVT equipped engines. Summit Pro LS cams are designed for engines swapped into pre-pollution controlled vehicles. They are not for use in registered emissions-controlled vehicles operated on public highways and roads. 3-bolt camshaft, computer tuning required.
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.
Applications
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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-8703 - Summit Racing™ Pro LS Single Plane Camshafts
Summit Racing™ Stage 4 Pro LS Single Plane Cam, 240/252 106 +0, .569 Lift, LS1 LS2 LS6 LS3 LS7 LQ4, 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
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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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