89018171 - LS7 Standard Bore Piston +.020" Oversized

Premium-quality hypereutectic aluminum alloy pistons are used on most production LS engines (the LS9 supercharged uses forged aluminum). They are lightweight, durable and promote quieter operation. GM Performance Parts offers production and oversized pistons for many applications. They're sold individually, unless otherwise specified.

• Engine size - 7.0L
  
• Bore size - 4.125"
  
• Oversize - +.020
  
• Rod length - 6.067
  
• Pin type - floating
  
• Comp ratio - 11.0
  
• with Chamber - 70cc
  
• Hypereutectic LS7 replacement