LME 402" N/A & Nitrous Aluminum Short Block

Late Model Engines (LME)
Current Stock:
Drop-Ships Directly from Manufacturer (4-6 Week Lead Time)

This solid 402" LS2 infrastructure will provide countless miles of felicity. Squared up using 4.005" forged Wiseco pistons, 4.000" Callies Compstar crank, and connected with 6.125" Compstar rods, the meticulously machined GM block is fitted with Clevite H-Series bearing and Durabond one piece cam bearings. (Shipping covers delivery to most areas but is subject to change)

Displacement: 402" Bore: 4.005"
Proven Power Rating: 600 HP N/A  800+ HP w/ Nitrous Stroke: 4.000"
Compression Ratio: 11.5:1 w/ 67cc Chamber Rod Length 6.125"
Cylinder Head Compatibility: LS1, LS2, LS3, LSA, LS9 Oil System Type: Wet Sump

Block: GM 6.0L LS2 Aluminum 
Crankshaft: Callies Compstar 4340 Forged w/ LME Blueprinting Process
Connecting Rods: Callies Compstar H-Beam w/ARP 2000 7/16" Bolts
Pistons: Wiseco Forged N/A 
Wrist Pins: Wiseco Standard
Ring Pack: NPR Stainless Top (for high heat applications) Napier Second, 3mm Oil
Bearings: Clevite H Series Main & Rods
Main Studs: ARP 


LME Standard Shortblock Blueprinting Process:

  • Block is fully deburred & inspected for flaws

  • Cylinders diamond honed with torque plates for optimal clearance per application

  • Crankshaft journals indexed & trued to exact tolerance

  • Optimal cylinder geometry achieved with diamond hone and surface finish verified with profilometer

  • Chamfered oil holes for improved oiling to bearings

  • Cylinders machined for rod clearance per application

  • Crankshaft journals polished to 2 Ra or better surface finish

  • Block and components meticulously deburred & cleaned after machining process

  • Crankshaft balanced within ¼ oz-in tolerance

  • All five main bearings & all eight rod bearing clearances measured and adjusted for application

  • Connecting rod housing bores checked & adjusted for optimal roundness & size

  • Ring are precision file fit per application

  • Piston pin bores measured & adjusted for application

  • Cam bearings installed and test cam fitted to ensure smooth rotation

  • Block aline honed and set to low of spec for maximun bearing crush

  • All oil galley plugs and dowel pins installed

  • Deck surfaces machined perpendicular to mains & deck height set for optimal quench

  • Meticulous final assembly of shortblock

  • Cylinders bored (when applicable) on 4 axis CNC perpendicular to mains giving you a true 90o  V8

  • All tolerances, clearances, machining specs, and part numbers are recorded and documented in build sheet