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Technical Articles for Part Number SUM-8711-1DS
Summit Racing™ Pro LS Camshaft & Spring Kits
Camshaft Kit, Pro LS, Hydraulic Roller Tappet, Advertised Duration 283/297, Lift .625/.605, Chevy GM, LS/LSX, Gen III/IV, Each
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Kit/Combo Contents
Summit Racing SUM-8711R1 - Summit Racing™ Pro LS Automotive Camshafts
Stage 4 Pro LS Cam, Extra Valve Clearance Version, 234/248 113.5 +3.5 .625/.605 Lift, Great Power, 3-bolt, 4.8-7.0L , Vortec LS1 LS2 LS6 LS7 LQ9 LS9
Kit Item Quantity: 1
Trick Flow Specialties TFS-2500286P - Trick Flow® Double Platinum .660 LS Dual Valve Spring and Retainer Kits
Valve Spring Kit, Dual Valve Springs, Chromoly Retainers, Locks, Seals, Chevy, LS, Kit
Kit Item Quantity: 1
Overview
Brand:
Manufacturer's Part Number:
SUM-8711-1DS
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8711-1DS
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
3,500-7,200
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Summit Stage 4 LS3 cam is designed for maximum acceleration across the gear ratio spread found in street/strip vehicles. Always check piston to valve clearance with this cam and degreeing in to get adequate piston to valve clearance may be required. It has a strong lope and uses state-of-the-art lobe designs to pull strongly past 7000 rpm with the Nanopeened Dual springs included.
Intake Duration at 050 inch Lift:
234
Exhaust Duration at 050 inch Lift:
247
Duration at 050 inch Lift:
234 int./248 exh.
Advertised Intake Duration:
283
Advertised Exhaust Duration:
297
Advertised Duration:
283 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):
113.5
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:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
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 & 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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Some parts are not legal for use in California or other states with similar laws / regulations
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