376ci 550hp LT1-LT4 Long Block Engine (New)

416ci LT1/LT4 LONG BLOCK ENGINE

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The LT1/LT4 416ci competition long block uses a new GM LT1/LT4 block with 4.070″ bore to produce the 416CI.  This long block provides a strong foundation for Boosted engines making up to 1000hp and can be customized to meet your needs.

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Block:

  • 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

Pistons:

  • Wiseco 2618 Forged Pistons with Armor Glide skirt coating

Bearings:

  • King H-Series Main and Rod Bearings

Lifters:

  • Johnson OE Lifters (DOD Delete)

Gaskets:

  • Cometic MLS Head Gaskets

Crank:

  • GM Forged Steel
  • Stroke 3.622”
  • Wet or Dry Sump Oiling
  • Internally Balanced Front and Rear

Rods:

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

Rings:

  • Wiseco GFX Stainless Steel

Camshaft:

  • BTR Billet Hyd Roller Camshaft, Custom Grind

Timing Sets:

  • Cloyes Billet Roller Timing Set

Oil Delivery:

  • GM Oil Pump, either wet or dry sump

CYLINDER HEAD SPECIFICATIONS

Type:

  • CNC Ported LT1 with REV Stainless Steel Valves and BTR Racing Double Polished valve springs and Titanium retainers

Head Bolts:

  • ARP Performance

Rocker Arms:

  • GM Rockers with BTR Trunion upgrade kit installed

Pushrods:

  • BTR 5/16 Hardened Pushrods