427" LSX 2500hp Short Block

427" LSX 2500hp Short Block

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427" LSX 2500hp Short Block

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$15,056.00

This short block is the heart of the proven combination that gives you 2000+ horsepower at your disposal. The solid foundation starts with your choice of blocks; the vigorous LS-Next from Dart or direct from GM, the mighty LSX. Both feature remarkable improvements to the oiling system and cast with exceptional materials. Handling the top end are provisions for 6-bolt head configuration with option to upgrade to 1/2" studs, this recourse makes cylinder head gasket and head lift issues a thing of the past. LMEs custom forged 4.125" piston from Wiseco is designed to handle the astounding heat and cylinder pressures today's boosted street machines produce. Callies Dragonslayer crank with a 4.000" stroke, 6.125" Ultra rods, and .200" wall heavy duty pins conclude the proven rotating construction making this the ultimate base for street car dominance.

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Description

This short block is the heart of the proven combination that gives you 2000+ horsepower at your disposal. The solid foundation starts with your choice of blocks; the vigorous LS-Next from Dart or direct from GM, the mighty LSX. Both feature remarkable improvements to the oiling system and cast with exceptional materials. Handling the top end are provisions for 6-bolt head configuration with option to upgrade to 1/2" studs, this recourse makes cylinder head gasket and head lift issues a thing of the past. LMEs custom forged 4.125" piston from Wiseco is designed to handle the astounding heat and cylinder pressures today's boosted street machines produce. Callies Dragonslayer crank with a 4.000" stroke, 6.125" Ultra rods, and .200" wall heavy duty pins conclude the proven rotating construction making this the ultimate base for street car dominance.

Engine Overview

Details

Displacement: 427" Bore: 4.125"
Proven Power Rating: 2000+RWHP Stroke: 4.000"
Compression Ratio: 9.5-1.5:1 Rod Length 6.125"
Cylinder Head Compatibility: Any LS Configuration Oil System Type: Wet Sup or Dry Sump

Block: GM LSX
Crankshaft: Callies EN30B Billet 8 Counterweight w/ LME Blueprinting Process
Connecting Rods: Dyres 300M Billet H-Beam w/ ARP 7/16" "D" Bolt
Pistons: Diamond Custom Forged FI  w/Gas Ports (.300" material above top ring land)
Wrist Pins: TP1 Tool Steel Heavy Wall .210"
Ring Pack: Total Seal AP Stainless Top (for high heat applications) AP Stainless 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

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