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Technical Articles for Part Number SUM-8723-2-BHV
Summit Racing™ Pro LS Camshaft & Spring Kits SUM-8723-2-BHV
Part Number: SUM-8723-2-BHV
Summit Racing™ Pro LS Camshaft & Spring Kits
SUM-8723 Level 2 Cam kit, Beehive Springs, Gaskets, Stage 4 Pro LS Twin-Turbo Cam. 240/242 Dur, 116+4, .625/.605 Lift, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0
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Kit/Combo Contents
ACDelco GM Genuine Parts Harmonic Balancer Fastener Bolts 12557840
Harmonic Balancer Bolt, Steel, Flanged Hex, Coarse Thread, Natural, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each
Kit Item Quantity: 1
Permatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker 22072
Ultra RTV, Black, Maximum Oil Resistance, Each
Kit Item Quantity: 1
Summit Racing™ Valve Seals SME-143008
Valve Seals, Positive Stop, Viton® Fluoroelastomer, 8mm Stem, 0.500 in. Guide, Set of 16, LS1 hat style with single spring locator
Kit Item Quantity: 1
Summit Racing™ Valve Locks SME-143009
Valve Locks, Stamped Steel, 7 Degree, 8mm Stem, 1-Groove, Commonly used with LS Gen III/IV and Gen. V LT stock retainers, Set of 32
Kit Item Quantity: 1
Summit Racing™ Valve Springs SUM-174005
Pro LS Valve Springs, Drop in, 0.630 Max Lift, Single Beehive, 1.3 in. O.D., 340 lbs./in. Spring Rate, 1.8 in. Installed Height, Set of 16
Kit Item Quantity: 1
Summit Racing™ Pro LS Twin Turbo Camshafts SUM-8723R1
Stage 4 Pro LS Twin-Turbo Cam. 240/242 Dur., 116+4, .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™ Cam Change Gasket Sets SUM-G2627
Engine Gasket Set, LS Cam Change Gasket Kit, LS-1,LS-2,LS-3,LS-6, Chevy, Set
Kit Item Quantity: 1
Overview
Brand:
Manufacturer's Part Number:
SUM-8723-2-BHV
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8723-2-BHV
Item Number:
7209263
Cam Style:
Hydraulic roller, OE roller
Basic Operating RPM Range:
3,800-7,300
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Summit Stage 4 Twin Turbo cam is designed for large Hot-Side Single and Twin-Turbo applications. It trades bottom end and a bit of spool for more top end power. More overlap is allowed which creates a serious lope, but free-flowing exhaust is a must. It is the largest cam that usually works without flycutting. A 3600+ rpm stall converter is recommended.
Intake Duration at 050 inch Lift:
240
Exhaust Duration at 050 inch Lift:
242
Duration at 050 inch Lift:
240 int./242 exh.
Advertised Intake Duration:
289
Advertised Exhaust Duration:
291
Advertised Duration:
289 int./291 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:
No
Valve Springs Included:
Yes
Valve Spring Style:
Beehive
Outside Diameter of Outer Spring (in.):
1.290 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.
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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