ATK Chevy 350CI Vortec Engine 350HP Complete EFI HP32C-EFI

Item #22582 Brand:ATK Engines

Made in the USA
ATK Chevy 350CI Vortec Engine 350HP Complete EFI HP32C-EFI
ATK HP32C-EFI Chevy 350CI Vortec Engine 350HP
* ** THIS ITEM IS TEMPORARILY OUT OF STOCK *** FREE SHIPPING on ATK Engines. This item ships directly from the manufacturer and is not available for store pickup. Some engines are made-to-order or can be backordered. Delivery can be delayed up to 5 to 6 weeks but typically ship within 2 weeks.
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This ATK Chevy 350CI Vortec Engine makes use of the latest EFI for better driving experience and improved fuel economy. It comes complete with all components from top to bottom, so you just need to provide your fuel system to run this engine. Made for rock-solid use, this crate engine is equipped with cast iron cylinder heads and sealed freeze plugs and oil galley plugs.

Engine Specifications:

  • Horsepower: 350
  • Torque: 400 lb/ft
  • Block: Seasoned OE 4 Bolt Main 1pc Seal Roller Block P/S Dipstick
  • Bore/Stroke: 4.040 x 3.480
  • Displacement: 350 C.I.D.
  • Crankshaft: OE Cast Crank 3.480" Stroke Externally Balanced Rear/Internal Front 1pc.
  • Connecting Rods: OE Powder Metal 5.700" Stock Bolts
  • Pistons: Hypereutectic Flat Top
  • Piston Rings: Moly Rings
  • Compression Ratio: 9.6:1 Compression
  • Camshaft: Hydraulic Roller
  • Camshaft Specifications: 220/224 @050 .495in/.502ex 112LSA
  • Camshaft Bearings: Installed & Clocked to OEM Position
  • Cylinder Heads: Cast Iron Vortec 64cc/165cc 1.94/1.50
  • Freeze Plugs: Brass Installed & Sealed
  • Rocker Arms: Stamped Steel 1.5 Ratio
  • Oil Galley Plugs: Installed & Sealed
  • Oil Pan: OE 5qt.
  • Weight:430

ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.

Don't forget the engine paint!
Engine Paint


ATK High Performance GM 350 Vortec 350 HP Stage 3 Long Block Crate Engines with EFI


Engine Information:

•Oil: 10W30
•Oil Filter: Wix or K&N Recommended Per Your Application
•Fuel Delivery: OE EFI System
•Intake Manifold: Stock Manifold
•Fuel Injectors: Stock Injectors
•Spark Plugs: Champion #RC9YC4
•Spark Plug Gap: .035"
•Harmonic Balancer/Damper: Stock Factory Balancer Internally Balanced
•Flex Plate / Flywheel: Stock
•Timing: Set To Factory Specifications
•Throttle Body: Stock
•Water Pump: Stock
•Firing Order: 1 5 3 6 2 4
•Air Intake: Cold Air Intake Suggested
•Exhuast: 1 5/8 Headers
•Fuel Pump: Stock
•Fuel: 91+ Octane
•Ignition: Stock
•Automatic Transmission Stall Converter: Stock

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts.

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Shipping is free and lift gate will be provided.

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