ATK Chevy 489 Stroker Engine 565HP Mid Dress HP411PM

The ATK HP411PM Chevy 489 Stroker Engine is perfect for owners, who do not want to compromise on power. This crate engine features 565 horsepower and 595 lb/ft torque to offer great speed and pulling power, and the included harmonic balancer reduces engine vibration. This long block mid-dressed engine includes cylinder heads, distributor, oil pan, valve covers, timing cover, water pump, harmonic balancer and flexplate.

Engine Specifications:

• Horsepower: 565
  
• Torque: 595 lb/ft
  
• Block: Seasoned OE 4 Bolt Main 1pc Seal Gen V 1991-1995
  
• Bore/Stroke: up to 4.310 x 4.250
  
• Displacement: 489 C.I.D.
  
• Crankshaft: Scat Nodular Iron 4.250" Stroke Internally Balanced 1pc.
  
• Connecting Rods: Scat 4340 Forged I Beam 6.385" ARP 8740 Bolts
  
• Pistons: Forged Small Dome
  
• Piston Rings: Moly Rings
  
• Compression Ratio: 10.1:1 Compression
  
• Camshaft: Hydraulic Roller
  
• Camshaft Specifications: 237/245 @050 .635in/.640ex 112LSA
  
• Camshaft Bearings: Installed & Clocked to OEM Position
  
• Cylinder Heads: Edelbrock Aluminum E-Street 110cc/290cc 2.19/1.88
  
• Freeze Plugs: Brass Installed & Sealed
  
• Rocker Arms: Billet Aluminum 1.7 Full Roller
  
• Oil Galley Plugs: Installed & Sealed
  
• Oil Pan: OE 5qt.
  
• Weight:530
  

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!