383ci Boosted LT1 Long Block Engine

383ci Boosted LT1 Long Block Engine

$9,499

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The 383ci Boosted Long Block is great for a Supercharger or Turbo that makes up to 15 psi of boost and will be driven on the street.

Peak Horsepower:  700bhp @ 6500rpm with around 14 psi of Boost
Peak Torque: 670lb/ft @ 4000rpm
Compression Ratio: 9.5:1
Operating Range: 2300 – 6500rpm
Required Fuel: 91+ Octane Pump Gasoline

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Block:

  • GM LT1 Cast Iron Block
  •  Deck to Match Pistons
  •  Bored 4.030”
  •  Honed with Torque Plates and Pressure Washed
  •  New Durabond Cam Bearings Installed
  •  Billet Steel 4-Bolt Main Caps, Line Bore and Hone
  •  ARP Main Studs

Pistons:

  • Mahle Forged Boost Pistons

Bearings:

  • Clevite H-Series Main and Rod Bearings

Lifters:

  • Comp Cams Hydraulic Roller

Covers:

  • GM Factory Oil Pan
  • GM Factory LT1 Timing Cover

Gaskets:

  • Fel Pro Head Gaskets .040”
  • Fel Pro Performance Oil Pan, Timing Cover Gaskets

Crank:

  • Scat 4340 Forged Steel
  • 3.750” stroke
  • Internally Balanced Front and Externally Balanced Rear

Rods:

  • Scat 4340 Forged H-Beam
  • 5.700” length
  • ARP Rod Bolts

Rings:

  • Mahle Plasma rings, Gapped for Boost

Camshaft:

  • Comp Cams Hydraulic Roller

Timing Sets:

  • Cloyes Extreme Duty Roller Timing Set

Oil Delivery:

  • Melling Select Performance
  • Melling Pick Up Tube Tig Welded
  • Melling HD Drive

CYLINDER HEAD SPECIFICATIONS

Type:

  • GM Aluminum LT1 Castings
  • Three Angle Performance Valve Job
  • CNC Porting

Intake Valves:

  • Manley Stainless Steel 2.00”

Exhaust Valves:

  • Manley Stainless Steel 1.56”

Pushrods:

  • Smith Brothers 5/16 .083” Wall Hardened

Combustion Chamber:

  • 54cc Combustion Chambers

Spring Package:

  • Lunati Polished Double Valve Springs
  • Light Weight Hardened Retainers and Locks

Head Bolts:

  • ARP Performance

Rocker Arms:

  • Comp Cams Ultra Pro Magnum 1.6 ratio, ARP 7/16 Rocker Studs