GM LSA 416" Short Block

Available Qty: 0

$10,749.00
5-6 weeks from order date

Creating a more stable platform while making alot more reliable power on your Cadillac cruiser is made possible by using custom forged 4.070" Wiseco pistons that feature gas Nitrided rings, Callies Compstar Extreme H-beam 6.125" rods, and Manley's 4" stroke forged crankshaft. This more rigid reciprocating end will keep everything in check with your 1.9L LSA blower, 2650, or even with a significant shot of N2O into the 10:1 chambers.

Displacement: 416" Bore: 4.070"
Proven Power Rating: 1200 RWHP Stroke: 4.000"
Compression Ratio: 9.5 - 10:1 Rod Length 6.125"
Cylinder Head Compatibility: LS3, LSA, LS9 Oil System Type: Wet Sump

Block: GM LSA 6.2L Aluminum
Crankshaft: Manley 4.0" Forged crank/ LME Blueprinting Process
Connecting Rods: Callies Compstar Extreme H-Beam w/ARP Ultra 7/16" Bolts
Pistons:

Wiseco LS Forged Boost Pistons

Wrist Pins: H-13 Heavy Wall .185"
Ring Pack: Wiseco Gas Nitrided Rings
Bearings: Clevite H Series Main & Rods
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