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The Smeding 427" LS Short Block is offered in three different configurations! Each package is meticulously assembled with the highest attention to detail and precision. Bearing clearance & ring gaps are measured, verified and set for each application's unique demands. Two different piston volumes are available, please select a horsepower rating and then the volume option will appear. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for more information.
1000hp:
Block: Dart SHP Iron, 7/16" Head Threads, 7/16" Main Bolts, 4.125" Bore
Crankshaft: Smeding 4340 6 Counterweight, Internal Balance, 4.000" Stroke, 58x
Rods: Smeding 4340 Forged Steel H-Beam w/ SP8740 Bolts, 6.125" Length
Pistons: Wiseco 2618 Forged Aluminum, Coated Skirts & 0.200" Pins
Rings: Stainless Steel Top, Napier 2nd, Low Tension Oil
1300hp:
Block: Dart SHP Iron, 7/16" Head Threads, 7/16" Main Bolts, 4.125" Bore
Crankshaft: Smeding 4340 6 Counterweight, Internal Balance, 4.000" Stroke, 58x
Rods: Smeding 4340 Forged Steel Pwr Adr H-Beam w/ ARP2000 Bolts, 6.125" Length
Pistons: Wiseco 2618 Forged Aluminum, Coated Skirts & 0.200" Pins
Rings: Stainless Steel Top, Napier 2nd, Low Tension Oil
1700hp:
Block: Dart SHP PRO Iron, 1/2" Head Threads, 7/16" ARP Main Studs, 4.125" Bore
Crankshaft: Smeding 4340 8 Counterweight, Internal Balance, 4.000" Stroke, 58x
Rods: Smeding 300m Billet Steel Pwr Adr I-Beam w/ ARP2000 Bolts, 6.125" Length
Pistons: JE Ultra 2618 Forged Aluminum, Coated Skirts, Gold Thermal Barrier & 0.200" Pins
Rings: Stainless Steel Top, Napier 2nd, Std Tension Oil
Camshaft Kit Includes: Smeding Forged Camshaft, Gaterman Link-Bar Hydraulic Roller Lifters & 4x Timing Set - Installed
Sealed-Up Kit Includes: Melling 10295 Oil Pump, GM Rear Main Seal Cover, Gen IV Front Timing Cover, LS Valley Cover & Smeding Turbo Oil Pan - Installed
Final assembly & tuning of this partial engine must be completed by an experienced engine assembler/builder. Smeding Performance is not responsible for damaged caused by user installed parts.
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