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In-House CNC Machining

LS7 440" N/A - Nitrous Short Block

LS7 440" N/A - Nitrous Short Block

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LS7 440" N/A - Nitrous Short Block

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$8,740.00

With a 4.130" bore and 4.125" stroke crank, this stout 440" unit will shake the pavement. Cruise the streets with an attitude and tear up the track with a shot of N2O reliably using custom forged Wiseco pistons, Callies Compstar crank and rods.

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Description

With a 4.130" bore and 4.125" stroke crank, this stout 440" unit will shake the pavement. Cruise the streets with an attitude and tear up the track with a shot of N2O reliably using custom forged Wiseco pistons, Callies Compstar crank and rods.

Engine Overview

Details

Displacement: 440" Bore: 4.130"
Proven Power Rating: 1000 RWHP w/ Nitrous Stroke: 4.125"
Compression Ratio: 12:1 w/ 70cc Chamber Rod Length 6.125"
Cylinder Head Compatibility: LS7 Oil System Type: Wet or Dry Sump

Block: GM LS7 7.0L Aluminum
Crankshaft: Callies 4340 Compstar w/ LME Blueprinting Process
Connecting Rods: Callies Compstar H-Beam w/ ARP 2000 7/16" Bolts
Pistons: Wiseco Forged Nitrous w/ Gas Ports 
Wrist Pins: Tool Steel 
Ring Pack: NPR Stainless Top (for high heat applications) Napier Second, 3mm Oil
Bearings: Clevite H-Series Mains & Rods, DuraBond One Piece Cam Bearings
Main Studs: ARP 


***CORE EXCHANGE SHIPPING: LME is happy to assist you in shipping your block and crankshaft cores to help you save money. Exchanging your block & crank cores helps reduce the overall engine build cost without sacrificing quality. We can have your existing shortblock picked up at a location convenient for you.


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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