416ci LT1-LT4 Short Block Engine


The LT1/LT4 416ci competition short block uses a new GM LT1/LT4 block with 4.070″ bore to produce the 416CI.  This short block provides a strong foundation for NA engines making up to 750hp and can be customized to meet your needs.

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Grand total


  • New GM LT1/LT4 Aluminum Block Honed with Torque Plates
  • Bore Size 4.070″
  • Zero Decked
  • Line Honed with ARP Main Studs
  • Blueprinted Oil Clearances
  • All New GM Block Plugs Installed
  • New Durabond Cam Bearings Installed


  • Wiseco 2618 Forged Pistons with Armor Glide skirt coating


  • Wiseco GFX Stainless Steel


  • King H-Series Main and Rod Bearings


  • Callies Comp Star 8 Counter weight 4340 Forged Steel
  • Stroke 4.000”
  • Wet or Dry Sump Oiling
  • Internally Balanced Front and Rear


  • Callies Comp Star 4340 Forged Steel H-Beam
  • 6.125” Length
  • ARP 2000 Rod Bolts

Additional information

Weight 350 lbs
Dimensions 38 × 26 × 27 in