LME 400" LSX 1500HP Long Block

Late Model Engines (LME)
Current Stock:
Drop-Ships Directly from Manufacturer (5-7 Week Lead Time)

This uncompromising combination will handle whatever boost your smaller displacement blower or turbos can offer. At the center is the proven 3.750" Callies 4340 Magnum crankshaft riding in Clevite H-Series bearings. 4.125” custom Wiseco pistons designed to handle high cylinder pressures are pinned to Callies Ultra 6.125” rods. Making use of the 6-bolt design the GM LSX block offers, the LME Black Label LS7 cylinder heads are fastened with ARP hardware. (Shipping covers delivery to most areas but is subject to change

Displacement: 400" Bore: 4.125”
Power Output (HP): 1500HP Stroke: 3.750”
Compression Ratio: 9.5 - 10.5:1  (specify in options) Camshaft Type: Low Lash Solid Roller
Max RPM: 8000 Oil System Type: Wet or Dry Sump
Port Configuration: LS7 Fuel Type: 91-93 Octane Gasoline

Block: GM LSX 6-Bolt Race Timing Chain: Roll Master Double Roller w/Billet Gears & Torrington Bearing
Crankshaft: Callies Magnum w/ LME Blueprint Process Lifters: Morel Solid Roller Tie-Bar
Connecting Rods: Callies Ultra H-Beam w/ ARP Ultra 7/16" Bolts Push Rods: One Piece Chromoly 3/8" x .135” Wall

LME/Wiseco Custom Forged FI w/ Gas Ports 

* LME/Wiseco custom pistons feature optomized valve pocket depth and location as well as enhanced ring land thickness creating the most stable piston for high boost and high heat applications

Rocker Arms:

Crower Stainless Adjustable Shaft Mount Roller Tip

Wrist Pins: Tool Steel Heavy Duty .200" Wall  Cyl. Head Fasteners: ARP 2000 12pt. Studs
Ring Pack: NPR Stainless Top (for high heat applications) Napier Second, 3mm Oil Head Gaskets: Cometic MLx 6-Bolt 
Bearings: Clevite H-Series Main & Rod, Dura Bond One Piece Cam Bearing Oil Pump: Melling HP Ported
Main Fasteners: ARP Studs Timing Cover: GM LS2 Front  w/cam Sensor
Cylinder Heads:

LME Black Label CNC Ported

400+cfm Intake / 270+cfm Exhaust

Valley Cover: GM LS2 

DLC Coated Titanium 2.250" Intake

1.610" Inconel Exhaust

Oil Pan: Select From Options
Valve Springs: PAC 1209X Nitrided Dual Coil w/ Titanium Retainers Rear Cover: GM LSX
Camshaft: LME/Cam Motion Custom Billet Core Low Lash  Balancer: A.T.I. SFI w/ARP Bolt