ATK Chevy 350CI 87-91 Corvette Engine Base HP57

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!