$275 Shipping

ATK HP116C-EFI Chevy LM7 5.3L 500HP with FiTech EFI Crate Engine

$275 Shipping

ATK HP116C-EFI Chevy LM7 5.3L 500HP with FiTech EFI Crate Engine
ATK Engines

|

#35020255

ATK HP116C-EFI Chevy LM7 5.3L 500HP with FiTech EFI Crate Engine

  • 500 HP
  • 440 TQ
  • OE LM7/5.3L Iron Block
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Level Of Dress:

#2 Complete Dress - EFI

#1 Base Engine

$9,199.00

/each

Factory Shipped


Quantity

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Product Summary

Long Block Crate Engine Type, 10.0:1 Compression Ratio

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

Key Specs

Crate Engine TypeLong Block
Compression Ratio10.0:1
Engine Displacement347 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
See more specs

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 35020255 Details

The ATK HP116C-EFI Chevy LM7 5.3L crate engine is a powerful 500 horsepower, 440 lb-ft torque setup built on a durable OE LM7 iron block with a 3.903" bore and 3.622" stroke, resulting in 347 cubic inches of displacement. It features an OE GM 24-tooth reluctor wheel crankshaft, powder metal connecting rods, and hypereutectic 10:1 compression pistons with moly rings for durability. The valvetrain includes a custom performance hydraulic roller camshaft, OE 1.7 ratio rocker arms, and AFR CNC-ported aluminum cylinder heads with 59cc combustion chambers and 200cc intake runners for optimized airflow. This package includes a FiTech Ultra Port Injection LS1 750HP EFI system with 55lb fuel injectors, transmission control, wiring harness, and ECM/TCM, providing modern fuel delivery and management. It also comes with a Melling M295 oil pump, Autolite #104 spark plugs, and 8mm plug wires, making it an ideal choice for high-performance street or strip builds requiring 91+ octane fuel, a 2200+ stall converter, and 1 5/8" or larger headers.

  • 500 HP
  • 440 TQ
  • OE LM7/5.3L Iron Block
  • 3.903” x 3.622 Bore/Stroke
  • 347 ci Displacement
  • OE GM 24 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 Rocker Arms
  • Melling M295 Oil Pump
  • FITECH Ultra port injection LS1 750HP with transmission control (wiring harness & ECM/TCM included) EFI System
  • FITECH 55lb Fuel Injectors
  • Autolite #104 Spark Plugs
  • 8mm Spark Plug Wires
  • Stock internally balanced Balancer

Application

Designed for 1999-2020 Chevy Applications. 

Specs

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

Warranty Information

Click for details

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 35020255 Specifications

KEY SPECS
MFG. Part #35020255
BrandATK Engines
Crate Engine TypeLong Block
Compression Ratio10.0:1
Engine Displacement347 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialAluminum
Piston MaterialHypereutectic Aluminum
Carburetor IncludedNo
Intake Manifold IncludedYes
Distributor IncludedNo
Connecting Rod MaterialPowdered Metal
Valve Covers IncludedYes
Engine BalanceInternal
Cylinder Heads IncludedYes
Rear Main Seal Style1-piece
Throttle Body IncludedYes
Timing Cover IncludedYes
Oil Pan IncludedYes
Water Pump IncludedNo
Harmonic Balancer IncludedYes
Flexplate IncludedNo
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedYes
Spark Plug Wires IncludedYes
Computer IncludedNo
Wiring Harness IncludedNo
Recommended Fuel91 Octane
GENERAL
Torque440 ft./lbs.
Horsepower500 horsepower
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 Code00653517731570
Sold in QuantityEach

Questions & Answers

1 Question • 1 Answer

What RPM is the power band in also what is the peak RPM on the torque? Need the numbers Man come on

by Rich

• 3 months ago

1 answer

View Answer

1 of 1 questions shown

Fitment

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  • GM LMG

  • GM LY5

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  • GM LMG

  • GM LY5

  • GM LC9

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  • GM LMG

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  • GM LM4

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  • 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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