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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.
900hp:
Block: Dart SHP Iron, 6 Bolt 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/ 8740 Bolts, 6.125" Length
Pistons: JE 2618 Forged Aluminum, Coated Skirts & 0.170" Pins
Rings: Stainless Steel Top, Napier 2nd, Low Tension Oil
1200hp:
Block: Dart SHP Iron, 6 Bolt 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/ ARP2000 Bolts, 6.125" Length
Pistons: JE 2618 Forged Aluminum, Coated Skirts
Rings: Stainless Steel Top, Napier 2nd, Low Tension Oil
1500hp:
Block: Dart SHP PRO Iron, 6 Bolt 1/2" Head Threads, 7/16" ARP Main Studs, 4.125" Bore
Crankshaft: Callies Compstar 8 Counterweight, Internal Balance, 4.000" Stroke, 58x
Rods: Smeding 300m Billet Steel 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.
All of our engine packages are extremely flexible and can be customized! If there is an option you would like and do not see, please call us at 210-446-0960.
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