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Technical Articles for Part Number SUM-1227
Summit Racing™ Pro SBC LS Firing Order Hydraulic Roller Camshafts SUM-1227
Part Number: SUM-1227
Summit Racing™ Pro SBC LS Firing Order Hydraulic Roller Camshafts
Pro SBC Retrofit Stage 7 Hyd. Roller LS Firing Order Cam, 252/258 Dur., 110 LSA + 2 Adv, .550/.550 1.5 Ratio, .587/.587 1.6 Ratio, 3200-7200 RPM Range
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Overview
Brand:
Manufacturer's Part Number:
SUM-1227
Part Type:
Product Line:
Summit Racing Part Number:
SUM-1227
Item Number:
7230757
UPC:
190861265820
Cam Style:
Hydraulic roller, Retro-fit
Camshaft Use:
Street/Strip
Camshaft Manufacturers Description:
The Stage 7 cam works with likes a 4.11+ gears and works best with a 3,800+ stall converter. It has a mean lope with a 383 CID engine or larger and is mainly designed for street/strip use.
Basic Operating RPM Range:
3,200-7,200
Intake Duration at 050 inch Lift:
252
Exhaust Duration at 050 inch Lift:
258
Duration at 050 inch Lift:
252 int./258 exh.
Advertised Intake Duration:
304
Advertised Exhaust Duration:
307
Advertised Duration:
304 int./307 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.550 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.550 in.
Valve Lift with Factory Rocker Arm Ratio:
0.550 int./0.550 exh.
Lobe Separation (degrees):
110
Camshaft Gear Attachment:
3-bolt
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Cam features the LS firing order, which swaps 4-7/2-3. Reroute plug wires for 1-8-7-2-6-5-4-3. Cam button and melonized or composite distributor gear required. Designed for engines originally equipped with flat tappet camshaft.
Summit Racing™ Pro SBC LS Firing Order Hydraulic Roller Camshafts
Summit Racing™ Pro SBC LS firing order hydraulic roller retrofit cams are available in seven stages, from a small smooth idle cam capable of towing, to a big duration stomper that's ready to go bracket racing. By utilizing the LS firing order on a traditional small block Chevy improves the engine in several ways. The benefits include improved combustion chamber cooling for reduced detonation, more power and torque gains, better mixture distribution, along with reductions in vibration and bearing wear. Best of all—these Pro SBC LS firing order hydraulic roller retrofit cams are precision ground in the USA on USA Billets! Order the cam for your application needs.
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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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