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Technical Articles for Part Number SUM-8709-2-DLSTL
Summit Racing™ Pro LS Camshaft & Spring Kits SUM-8709-2-DLSTL
Part Number: SUM-8709-2-DLSTL
Summit Racing™ Pro LS Camshaft & Spring Kits
Camshaft Kit, Pro LS, Hydraulic Roller Tappet, Advertised Duration 288/296, Lift .625/.605, Chevy GM, LS/LSX, Gen III/IV, Kit
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Kit/Combo Contents
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Summit Racing SUM-8709R1 - Summit Racing™ Pro LS Automotive Camshafts
Stage 4 Pro LS Cam 238/246 113+3, .625/.605 Lift, Maximum power version, 3-bolt 5.3, 5.7, 6.0, 6.2, 7.0, LS1 LS2 LS6 LS3 LS7 LSA LQ4 LQ9 LS9 LY6 LY5
Kit Item Quantity: 1
Summit Racing SUM-G2627 - Summit Racing™ Cam Change Gasket Sets
Engine Gasket Set, LS Cam Change Gasket Kit, LS-1,LS-2,LS-3,LS-6, Chevy, Set
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Trick Flow Specialties TFS-2500286P - Trick Flow® Double Platinum .660 LS Dual Valve Spring and Retainer Kits
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Kit Item Quantity: 1
Overview
Brand:
Manufacturer's Part Number:
SUM-8709-2-DLSTL
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8709-2-DLSTL
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
3,500-7,200
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
The Summit Stage 4 LS cam is the ultimate street/strip cam for a car or truck with the factory intake manifold design. It has a rowdy idle and will out horsepower any cam in its range. It uses state-of-the-art lobe designs to pull strongly past 7000 rpm with the Nanopeened Dual springs included. It's the largest cam that fits LS3 with un-milled heads, but always check piston to valve clearance and degree if necessary. Deeper gears are a plus.
Intake Duration at 050 inch Lift:
237
Exhaust Duration at 050 inch Lift:
246
Duration at 050 inch Lift:
237 int./246 exh.
Advertised Intake Duration:
288
Advertised Exhaust Duration:
296
Advertised Duration:
288 int./296 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):
113
Camshaft Gear Attachment:
3-bolt
Computer-Controlled Compatible:
Yes
Lifters Included:
No
Valve Springs Included:
Yes
Valve Spring Style:
High lift
Outside Diameter of Outer Spring (in.):
1.304 in.
Retainers Included:
Yes
Locks Included:
Yes
Valve Stem Seals Included:
Yes
Timing Chain and Gears Included:
No
Assembly Lubricant Included:
No
Pushrods Included:
No
Rocker Arms Included:
No
Gaskets Included:
Yes
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. Not for use in registered emissions-controlled vehicles operated on public highways and roads. 3-bolt camshaft, computer tuning required.
Special Attention:
Hazardous items are only returnable in person to a retail store due to strict shipping regulations.
Summit Racing™ Pro LS Camshaft & Spring Kits
Summit Racing™ Pro LS camshaft and spring kits are designed for GM LS engines. Each cam kit offers a budget-friendly option without sacrificing quality and performance. They're available in Stage 1 or 2 performance configurations. Stage 1 kits include the cam and matching drop in beehive springs with seals or optional upgraded dual spring and retainer kit. Stage 2 kits give you an additional cam change gasket kit and a crank bolt. Order the Summit Racing™ Pro LS camshaft kit recommended for your year/make and engine application.
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