This 427" LS3 Long Block is in stock and ready to ship! Featuring our 1,700hp rated upgrades and with Johnson Hyd Roller lifters, this is the next engine your hot rod needs. Call our sales team at 210-446-0960 for more information!

1700hp:
Block: Dart SHP PRO Iron, 6 Bolt 1/2" Head Threads, 7/16" ARP Main Studs, 4.125" Bore
Crankshaft: Smeding 4340 8 Counterweight, Internal Balance, 4.000" Stroke
Rods: Smeding 300m Billet Steel Hvy Dty 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, 1.2/1.5/3.0
Camshaft: Smeding Forged Steel Hydraulic Roller
Lifters: Johnson Link-Bar Hydraulic Roller
Timing Set: Performance Single Roller, 4x
Oil Pump: Melling 10295 Oil Pump
Cylinder Heads: Smeding CNC Ported 11° 6 Bolt LS3 Heads
Head Gaskets: Cometic MLX 5-Layer Head Gaskets
Head Fasteners: 6 Bolt ARP/Dart Head Stud Kit - 1/2"
Pushrods: Chromoly Swedged End Pushrods
Rocker Arms: GM LS3 w/ Upgraded Trunnions