Skip to product information
1 of 5

LME LSR 427" 2000+HP

LME LSR 427" 2000+HP

Regular price $19,795.00 USD
Regular price Sale price $19,795.00 USD
Sale Sold out
Shipping calculated at checkout.

Our 427" LSR Shortblock is a proven combination to get more cubic inches and power for your ride. This block will go into any LS-powered vehicle! Any LS1,LS2,LS3,LSA,LS7 or LS9 can be pulled out and replaced with this stout unit! This engine is set up for a forced induction application. Supercharger, turbos, procharger it doesn’t matter this engine will take it. The aluminum block saves weight for those applications in need of weight savings.

 

Displacement: 427" Bore: 4.125"
Proven Power Rating: 2000+ HP Stroke: 4.000"
Compression Ratio: 10.5:1 w/ 64cc Chamber Rod Length 6.125"
Cylinder Head Compatibility: Any LS Oil System Type: Wet or Dry

Block: Concept Performance LSR Block
Crankshaft: Callies Magnum 8 Counterweight w/ LME Blueprinting Process
Connecting Rods: Dyers 300M 6.125" w/ARP  Bolts
Pistons: LME/Diamond 2K Custom Forged FI w/Gas Ports (.300" material above top ring land)
Wrist Pins: Trend H-13 Tool Steel Heavy Wall .250"
Ring Pack: Total Seal 1.5mm AP Stainless Top (for high heat applications) .043" Ductil 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

Product features

Materials and care

Merchandising tips

View full details
Your cart
Product Product subtotal Quantity Price Product subtotal
LME LSR 427" 2000+HP
LME LSR 427" 2000+HPLME LSR 427" 2000 Shortblock
LME LSR 427" 2000+HPLME LSR 427" 2000 Shortblock
$19,795.00/ea
$0.00
$19,795.00/ea $0.00