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Technical Articles for Part Number SUM-8706R1
Summit Racing™ Pro LS Turbo Camshafts
Camshaft, Stage 2, Pro LS Turbo Cam. 226/230 Dur., .600/.575 Lift, 113+4 Lobe Sep. , 5.3, 5.7, 6.0, 6.2, 7.0, LS1 LS2 LS6 LS3 LS7 LQ4 LQ9 LS9, Each
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
SUM-8706R1
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8706R1
UPC:
190861251434
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Racing
Camshaft Manufacturers Description:
Not intended for use with VVT or AFM. Designed for single turbo applications and has a steady lope. It spools quickly and pulls hard in the mid-range and has a great top-end. A 2,800 stall converter is recommended.
Basic Operating RPM Range:
3,000-7,000
Intake Duration at 050 inch Lift:
226
Exhaust Duration at 050 inch Lift:
230
Duration at 050 inch Lift:
226 int./230 exh.
Advertised Intake Duration:
275
Advertised Exhaust Duration:
282
Advertised Duration:
275 int./282 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.600 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.575 in.
Valve Lift with Factory Rocker Arm Ratio:
0.600 int./0.575 exh.
Lobe Separation (degrees):
113
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
Yes
Valve Springs Required:
No
Quantity:
Sold individually.
Notes:
Camshaft features base circle of 0.720 int./0.734 exh.
Summit Racing™ Pro LS Turbo Camshafts
Summit Racing™ Pro LS Turbo cams are affordable and specifically designed to optimize cam timing with turbochargers. The lobes are stable up to 7,000-plus rpm with the exhaust lobes opening softly against high cylinder pressure for reduced stress on the valvetrain. Overlap has also been reduced in order to prevent reversion, which is typically seen with higher turbine inlet pressures. They come in distinct stages that give you the idle, spool, and power characteristics that match your engine and turbocharger. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for unmatched quality. The lobes have been designed for stability at high rpm with the spring pressures found in commonly available quality spring packs.
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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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