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High Performance Short Block GM LS 383ci
InfoVehicle Info Needed
ATK ENGINESPART NUMBER: 059-SP77

High Performance Short Block GM LS 383ci

$4,21344
Core Charge: $28500
Truck Freight
ShippingShips on 01/20/2027
Lowest PriceLowest Price Guarantee

Items You Need

10295 Oil Pump Stock Volume High Pressure for GM LS

MELLING

10295 Oil Pump Stock Volume High Pressure for GM LS

Part Number : 689-10295
$15599
Break-In/Engine Oil Supplement [12 oz. Bottle]

JEGS

Break-In/Engine Oil Supplement [12 oz. Bottle]

Part Number : 555-28060
$1009$11.99
You Save$1.90
Engine Stand [1250 lb. Capacity]

JEGS

Engine Stand [1250 lb. Capacity]

Part Number : 555-80041
$12499$137.99
You Save$13.00
19212593 Muscle Car Oil Pan Kit for GM Gen III/IV LS Engine Swaps

CHEVROLET PERFORMANCE

19212593 Muscle Car Oil Pan Kit for GM Gen III/IV LS Engine Swaps

Part Number : 809-19212593
$32199

Gen III/IV LS 24 Tooth
High Performance Short Block
  • GM LS 383ci Stroker
  • Cast Iron 5.3L LM7 Block
  • 4340 Forged Crankshaft 24 Tooth
  • 4340 Forged I Beam Rods
  • 2618 Forged Dished Pistons -8cc

    This short block is built for naturally aspirated engines up to 700hp. 

    Block Information:

    • Seasoned OE 1999-2007 GM LM7 5.3L
    • Bore/Stroke: 3.903" x 4.000"
    • Displacement: 383ci
    • Camshaft Bearings: Installed and clocked to OEM position
    • Freeze Plugs: Installed and sealed
    • Oil Galley Plugs: Installed and sealed

    Rotating Assembly:

    • Crankshaft: K1 4340 forged 24 tooth reluctor wheel
    • Rods: Scat Pro 4340 Forged I Beam Rods with ARP 8740 bolts
    • Compression Ratio: 65cc= 10.7:1 67cc= 10.5:1 / 70cc= 10.2:1 
    • Pistons: Wiseco 2618 Forged dished -8cc
    • Rings: Wiseco GFX (alloy steel top ring)

      Recommended Components:

    • Balancer: Internal balance
    • Flexplate/Flywheel: Internal balance
    • Head Gasket: .051" thickness or per application
    • Oil: 10W40 Non synthetic for first 3000 miles
    • Oil Filter: Wix or K&N per application
    • Oil Pump: Melling #689-10295 with high pressure spring

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    Please CLICK HERE for ATK Warranty

      • Short Blocks for Street or Strip

      ATK Engines High-Performance Short Blocks provide the foundation for your next engine build for Gen I Small Block Chevys, Big Block Chevys, and Gen III/IV LS. These short blocks support mild to extreme horsepower in naturally aspirated or boosted applications.

    Part TypeEngine Short Block
    Product LineATK Engines Small, Big Block Chevy & LS Short Blocks
    BrandATK ENGINES
    Package Height26.0
    Package Width26.0
    Package Length29.0
    Weight260.0 PG
    Part CategoryPerformance Parts
    QuantitySold individually
    Part FitmentSemi Universal
    Vendor Part NumberSP77
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning