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Instruction Sheets for Part Number SUM-8725R1
Technical Articles for Part Number SUM-8725R1
Summit Racing™ Pro LS Twin Turbo Camshafts SUM-8725R1
Part Number: SUM-8725R1
Summit Racing™ Pro LS Twin Turbo Camshafts
Stage 5 Pro LS Twin-Turbo Cam. 247/251 Dur., 117.5+5.5, .625/.615 Lift, 3-bolt, 5.3, 5.7, 6.0, 6.2, 7.0, Vortec Truck, LS1 LS2 LS6 LS3 LQ4 LQ9, Each
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Overview
Brand:
Manufacturer's Part Number:
SUM-8725R1
Part Type:
Product Line:
Summit Racing Part Number:
SUM-8725R1
UPC:
190861257856
Cam Style:
Hydraulic roller, OE roller
Camshaft Use:
Turbocharged
Camshaft Manufacturers Description:
The Summit Stage 5 Turbo cam is designed for 6.0L + engines with short runner intakes. Large Turbine and A/R T6 Single or Twin Turbos required. Flycutting and Open Exhaust required. This cam is stable at high rpm with 160lb. seat pressure and 400lb. open pressure. A 4500+ stall converter is recommended.
Basic Operating RPM Range:
4,200-7,700
Intake Duration at 050 inch Lift:
247
Exhaust Duration at 050 inch Lift:
251
Duration at 050 inch Lift:
247 int./251 exh.
Advertised Intake Duration:
298
Advertised Exhaust Duration:
304
Advertised Duration:
298 int./304 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):
117.5
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
Yes
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
The Summit Stage 5 Turbo cam is designed for 6.0L + engines with short runner intakes. Large Turbine and A/R T6 Single or Twin Turbos required. Flycutting and Open Exhaust required. This cam is stable at high rpm with 160lb. seat pressure and 400lb. open pressure. A 4500+ stall converter is recommended. Tuning Required
Summit Racing™ Pro LS Twin Turbo Camshafts
Summit Racing™ Pro LS T6 single and twin turbo cams have increased overlap from the standard turbo cams to take advantage of the better turbine housing flow. As a result, these cams will increase RPM and work with larger cubic inches better in race applications where an open front exit exhaust is utilized.
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Some parts are not legal for use in California or other states with similar laws / regulations
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