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Charts & Guides for Part Number SUM-8704
Technical Articles for Part Number SUM-8704
Summit Racing™ Pro LS Single Plane Camshafts
Summit Factory Performance Stage 2 LS Cam, 227/239 108 L/S, .551/.551 Lift, Vortec LS1 LS2 LS6 LS3 LS7 LQ4 LQ9, Summit's version of Factory Stage 2
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Overview
Brand:
Manufacturer's Part Number:
SUM-8704
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8704
Item Number:
3991249
UPC:
190861138940
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Racing
Camshaft Manufacturers Description:
The Summit Stage 2 Single Plane cam has an aggressive lope. It makes good midrange power and is designed to be used with LS6 springs. It can make power to 7000 rpm with the higher rate dual spring option. Fly-cutting pistons may be required.
Basic Operating RPM Range:
2,700-6,700
Intake Duration at 050 inch Lift:
227
Exhaust Duration at 050 inch Lift:
239
Duration at 050 inch Lift:
227 int./239 exh.
Advertised Intake Duration:
290
Advertised Exhaust Duration:
305
Advertised Duration:
290 int./305 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.551 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.551 in.
Valve Lift with Factory Rocker Arm Ratio:
0.551 int./0.551 exh.
Lobe Separation (degrees):
108
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
Yes
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 Single Plane Camshafts
Summit Racing™ Pro LS Single Plane cams are affordable and designed for racing applications where a carburetor and open exhaust are commonly found. These cams have slightly narrower lobe separation to increase torque and compliment short runner intakes. They come in distinct cam timing increments to give you maximum control over the power band. They're also designed with longevity in mind by taking stress off the valvetrain. These lobes remain stable to over 7,000 rpm with a common .600 and .670 lift dual spring kits.
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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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