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LS 4" Stroke Rotating Assembly

Rotating Assembly and Piston/Rod Kits

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LS 4" Stroke Rotating Assembly

LS 4.000" Forged complete rotating assembly +1500hp

Get more displacement in your LS with a 4.000" stoker kit. No modifications necessary! 

 Rotating Assembly

  • 4.070'' Bore (Options Listed Below)
  • 4.000'' Stroke
  • 6.125'' Rod Length
  • Diamond -22.5cc Dish Pistons
  • 24X or 58X reluctor wheel included
  • Fully balanced
  • Includes Total Seal piston rings

Fully Balanced Rotating Assemblies

Bullet-proof your LS engine's bottom-end with high quality components from SME. Your new rotating assembly includes 4340 forged Pro Series LS lightweight crank 4340 forged H-beam connecting rods, competition series pistons, Total Seal low friction 1.5mm, 1.5mm, 3.0mm piston rings.

Crankshaft Features:

  • 4340 material forgings
  • Multi-step heat treatment process and nitrided for added strength
  • Stress relieved, shot-peened and 100% magnafluxed
  • Micro polished large radius journals
  • Gun drilled mains and lightened rod journals for weight reduction
  • Counterweights fully profiled 

    Connecting Rod Features:
  • Manufactured from 4340 forgings
  • Heat treated, stress relieved, shot peened and 100% magnafluxed
  • Weight matched sets ± 1.5 grams
  • Cap fasteners are premium ARP 2000

    Piston Features:
  • 2618 high strength material lightweight design
  • Offset wrist pin design
  • Machined for reluctor wheel clearance
  • 1.5, 1.5, 3mm ring package
  • Forced pin oiling, pressure balance groove and precision pin fitting
  • .927'' diameter Premium Chrome Moly wrist pins included with round wire locks
  • Total Seal piston rings 

If you don't see what you are looking for, call or email us

Part #: 25430

Price: $3,299.00
Please Call for Availability !
Bore Size:
Reluctor Ring:

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