Item # 22609 BRAND: ATK Engines

ATK Chevy 350CI 87-91 Corvette Engine Base HP57

HP57 ATK Chevy 350CI 87-91 Corvette Base Engine Long Block Price Includes $370 Core Charge
HP57 ATK Chevy 350CI 87-91 Corvette Base Engine Long Block Price Includes $370 Core Charge
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$5,769.00
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HP57 ATK Chevy 350CI 87-91 Corvette Base Engine Long Block Price Includes $370 Core Charge

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ATK Chevy 350CI 87-91 Corvette Engine Base HP57

Product Overview:

Description

This ATK HP57 Chevy 350CI 87-91 Corvette Engine Base is an upgrade to your old ride. Designed as a replacement for 87-91 Corvettes, it delivers 370 ft.lb torque for improved driving experience. Its smooth idle and consistency is perfect for everyday drivers.

Engine Specifications:

  • Horsepower: 289
  • Torque: 370 lbs./ft.
  • Block: Seasoned OE 4 Bolt Main 1pc Seal Roller Block P/S Dipstick
  • Bore/Stroke: 4.040 x 3.480
  • Year Range: 1987-1991
  • 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 Dished
  • Piston Rings: Moly Rings
  • Compression Ratio: 10.0:1 Compression
  • Camshaft: Hydraulic Roller
  • Camshaft Specifications: 207/214 @050 .411in/.428ex 117LSA
  • Camshaft Bearings: Installed & Clocked to OEM Position
  • Cylinder Heads: Edelbrock Performer Aluminum 60cc/165cc 2.02/1.60
  • Freeze Plugs: Brass Installed & Sealed
  • Rocker Arms: Stamped Steel 1.6 Ratio
  • Oil Galley Plugs: Installed & Sealed
  • Oil Pan: OE 5qt.
  • Weight: 350

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

Warranty

Click Here for Warranty Information

Specifications

Engine Information:

• Oil: 10W30
• Oil Filter: Wix or K&N Recommended Per Your Application
• Fuel Delivery: OE EFI System
• Intake Manifold: Edelbrock High-Flo TPI
• Fuel Injectors: Stock Injectors
• Spark Plugs: Autolite #3926
• Spark Plug Gap: .035"
• Harmonic Balancer/Damper: POWERBOND Internally Balanced 8" #PB1046-N
• Flex Plate / Flywheel: Externally Balanced 168 Tooth
• Timing: 34-36 Degrees Total
• Water Pump: Per Application
• Firing Order: 1 8 4 3 6 5 7 2
• Exhuast: 1 5/8 Headers
• Fuel Pump: Stock
• Fuel: 91+ Octane
• Ignition: Stock
• Automatic Transmission Stall Converter: Stock

Shipping & Handling

Shipping is free and lift gate will be provided.

In the Box

Contents

ATK High Performance GM 350 289 HP Corvette Long Block Crate Engines

Guides & Accessories

Accessories

Recommended Components:

• Balancer: 6.75" internal balance
• Distributor: Stock (iron gear)
• Flexplate/Flywheel: External balance 168 tooth
• Intake Manifold: Stock TPI intake
• Fuel Pump: Stock
• Spark Plugs: Autolite #417-3926
• Spark Plug Wires: 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.

Reviews

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Questions & Answers

Which is best a 650 or a 750 Edelbrock AVS for this kind of motor ?

Asked by: Redbullet
We apologize for the confusion and inconvenience. We would have to advise you to speak directly to the manufacturer as these items drop ship. They can be reached by calling 866-721-2315.
Answered by: Caleb M
Date published: 2021-08-06

How's it going. Does this engine come with all the necessary gaskets for install? For example, intake, exhaust, water pump, oil filter, etc? Do you physically have this engine in your possession, so that once ordered, it will ship out immediately? Thanks!

Asked by: Casey
We apologize for the confusion and inconvenience. We would have to advise you to speak directly to the manufacturer as these items drop ship. They can be reached by calling 866-721-2315
Answered by: Kelly H
Date published: 2021-08-04
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ATK Chevy 350CI 87-91 Corvette Engine Base HP57
$5,769.00
In Stock