441" LS3 Long Block

Each Smeding 441" LS 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. We can also assist with selecting the correct camshaft for your build and goals! Call 210-446-0960 for more information. Block: Dart SHP Iron, 6 Bolt 7/16" Head Threads, 7/16" Main Bolts, 4.125" BoreCrankshaft: Smeding 4340 Forged Steel, Internal Balance, 4.125" Stroke, 58xRods: Smeding 4340 Forged Steel Pwr Adr H-Beam w/ ARP2000 Bolts, 6.125" LengthPistons: JE 2618 Forged Aluminum, Coated Skirts, 11.6:1 CompressionRings: Stainless Steel Top, Napier 2nd, Low Tension Oil, 1.2/1.5/3.0Camshaft: Smeding Hydraulic Roller, .624”/.615” Lift, 245°/256° Duration @ .050”Lifters: Gaterman Link-Bar Hydraulic RollerTiming Set: Performance Single Roller, 4xOil Pump: Melling 10295 Oil PumpCylinder Heads: Smeding 275cc CNC Ported 11° 6 Bolt LS3 HeadsHead Gaskets: Cometic MLS 5-Layer Head GasketsHead Fasteners: 6 Bolt ARP Head Stud KitPushrods: Manley Chromoly Swedged End PushrodsRocker Arms: GM LS3 w/ Upgraded Trunnions 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.