$275 Shipping

ATK HP116-G4 Chevy 500HP LM7 GEN IV 5.3L Crate Engine

$275 Shipping

ATK HP116-G4 Chevy 500HP LM7 GEN IV 5.3L Crate Engine
ATK Engines

|

#35020248

ATK HP116-G4 Chevy 500HP LM7 GEN IV 5.3L Crate Engine

  • 500 HP
  • 440 TQ
  • OE LM7/5.3L Iron Block
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$5,358.99

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Product Summary

Long Block Crate Engine Type, 10.1:1 Compression Ratio

  • 500 HP
  • 440 TQ
  • OE LM7/5.3L Iron Block
  • 3.903” x 3.622 Bore/Stroke
  • 347 ci Displacement
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Key Specs

Crate Engine TypeLong Block
Compression Ratio10.1:1
Engine Displacement347 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
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Need To Know

Made to Order

This custom item will ship when completed

Truck Shipment

Truck shipments must be pre-paid with a credit card, certified check or money order

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ATK Engines 35020248 Details

The ATK HP116-G4 Chevy 500HP LM7 GEN IV 5.3L base engine is a high-performance build capable of producing 500 horsepower and 440 lb-ft of torque, based on an OE LM7 5.3L iron block with a 3.903" bore and 3.622" stroke, resulting in 347 cubic inches of displacement. It features an OE GM 58-tooth reluctor wheel crankshaft, OE powder metal connecting rods, and hypereutectic pistons with a 10.1:1 compression ratio, paired with moly rings for durability. The valvetrain includes a custom performance hydraulic roller camshaft, OE 1.7 ratio rocker arms with trunnion upgrades, and AFR CNC-ported aluminum cylinder heads with 59cc combustion chambers and 200cc intake runners for optimal airflow. It is equipped with a Melling M295 oil pump and is designed for use with 36lb injectors, LS-style EFI intake manifolds, and 1 5/8" or larger headers. The engine requires 91+ octane fuel, a 2200+ stall converter, and ECM tuning for peak performance.

  • 500 HP
  • 440 TQ
  • OE LM7/5.3L Iron Block
  • 3.903” x 3.622 Bore/Stroke
  • 347 ci Displacement
  • OE GM 58 tooth reluctor wheel Crankshaft
  • OE powder metal Rods
  • Hypereutectic 10.1 compression Pistons
  • Moly Rings
  • Hyd. Roller Camshaft
  • Custom performance grind Cam Specs
  • OE single roller Timing Chain
  • AFR CNC ported aluminum 59cc/200cc 2.000”in/1.570”ex Cylinder Heads
  • OE 1.7 ratio with trunnion upgrade Rocker Arms
  • Melling M295 Oil Pump

Application

This engine can replace the Gen IV Chevy 4.8/5.3/6.0L engines with proper upgrades. ECM MUST BE TUNED and injectors must be upgraded; not doing so can damage the engine.

Specs

  • Conventional / Non Synthetic 10W30 Oil
  • Wix or K&N Oil Filter
  • Set to factory specifications via PCM module (ECM TUNING REQUIRED) Timing
  • .040” Spark Plug Gap
  • 18726543 Firing Order
  • 91+ Octane
  • 2200+ Stall Converter
  • 1 5/8+ Headers Exhaust

Warranty Information

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Warranty claims must be filed with the manufacturer in accordance to their policies.

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine
CA Prop 65
CARB warning

ATK Engines 35020248 Specifications

KEY SPECS
MFG. Part #35020248
BrandATK Engines
Crate Engine TypeLong Block
Compression Ratio10.1:1
Engine Displacement347 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Carburetor IncludedNo
Intake Manifold IncludedNo
Distributor IncludedNo
Connecting Rod MaterialPowdered Metal
Valve Covers IncludedNo
Engine BalanceInternal
Cylinder Heads IncludedYes
Rear Main Seal Style1-piece
Throttle Body IncludedNo
Timing Cover IncludedNo
Oil Pan IncludedNo
Water Pump IncludedNo
Harmonic Balancer IncludedNo
Flexplate IncludedNo
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedNo
Spark Plug Wires IncludedNo
Computer IncludedNo
Wiring Harness IncludedNo
Reluctor Wheel58x
GENERAL
Torque440 ft./lbs.
Horsepower500 horsepower
Combustion Chamber Volume59cc
Camshaft Duration (.050 in)218° intake / 226° exhaust
Camshaft Lift (in).543 intake / .554 exhaust
Bore x Stroke (in)4.060" x 3.000"
GTIN Code00653517734427
NotesThis engine can replace the Gen IV Chevy 4.8/5.3/6.0L engines with proper upgrades. ECM MUST BE TUNED and injectors must be upgraded; not doing so can damage the engine.
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Fitment

  • GM LM4

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  • GM LC9

  • GM LMG

  • GM LY5

  • GM LY5

  • GM LM7

  • GM LM7

  • GM LS4

  • GM LS4

  • GM LM7

  • GM LM7

  • GM LM4

  • GM LMG

  • GM LY5

  • GM LM7

  • GM L59

  • GM LM7

  • GM LC9

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LMG

  • GM LY5

  • GM L59

  • GM LM7

  • GM LMG

  • GM LY5

  • GM LC9

  • GM LMG

  • GM LMG

  • GM LY5

  • GM LH6

  • GM LM4

  • GM LM4

  • GM LM4

  • GM LM7

  • GM L33

  • GM LM7

  • GM L33

  • GM LM7

  • GM L33

  • GM LM7

  • GM L33

  • GM LC9

  • GM LMG

  • GM L33

  • GM L59

  • GM LM7

  • GM LM7

  • GM LM7

  • GM LC9

  • GM LMG

  • GM LM7

  • GM L59

  • GM LM7

  • GM LH8

  • GM LH9

  • GM LH8

  • GM LH9

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