ATK Chevy 540CI Engine 650HP Mid Dress HP42M

Experience a breath-taking performance with this ATK HP42M Chevy 540CI Engine. Its enormous 660+ and 650+ lb/ft torque gives you the ability to stun the competition. This long block engine is equipped with dart aluminum heads for boosted performance. The forged and sealed components enhance safety and reliability.

Engine Specifications:

• Horsepower: 660+
  
• Torque: 650+ lb/ft
  
• Block: Dart Big M 9.8 4 Bolt Main 2pc Seal
  
• Bore/Stroke: 4.500 x 4.250
  
• Displacement: 540 C.I.D.
  
• Crankshaft: Manley 4340 Forged 4.250" Stroke Internally Balanced 2pc.
  
• Connecting Rods: Manley 4340 Forged H Beam 6.385" ARP 8740 Bolts
  
• Pistons: Forged
  
• Piston Rings: Moly Rings
  
• Compression Ratio: 10.1:1 Compression
  
• Camshaft: Hydraulic Roller
  
• Camshaft Specifications: 243/249 @050 .640in/.640ex 112LSA
  
• Camshaft Bearings: Installed & Clocked to OEM Position
  
• Cylinder Heads: Dart Aluminum 121cc/325cc 2.25/1.88
  
• Freeze Plugs: Brass Installed & Sealed
  
• Rocker Arms: Howards Billet Aluminum Full Roller 1.7 Ratio
  
• Oil Galley Plugs: Installed & Sealed
  
• Oil Pan: Moroso 6qt.
  
• 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!