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 sales@stevemorrisengines.com