Our 1000 Series 5.3 L83 based LT short block is rated to handle 1000 HP reliably.  Whether you want to pump some boost in this unit and see what that tranny can hold, or if you want to see just how much nitrous a 5.3 can eat, this is the right place to start!

Build Specs:

• Seasoned GM L83 Block
  • Zero Decked with Rottler CNC
  • CNC Bored with Rottler CNC
  • CNC Honed with Rottler CNC
  • Align Honed
• GM Stock 5.3 Crank (Wet Sump Snout)
• Forged H-Beam Rods with ARP bolts
• Forged 2618 Piston and Ring Set (Your Choice of Dished or Flat Top)
• Calico Coated Main & Rod Bearings
• Durabond Coated Cam Bearings
• New block plug kit and Barbell
• ARP Main Studs