ATK Chevy 540CI Engine 650HP Base HP42

Tear the street or track with this ATK HP42 Chevy 540CI Engine. It features enormous horsepower and torque to satisfy your power needs, but still maintains a lopey idle. This long block crate engine uses aluminum cylinder for enhanced performance, and the forged pistons offer improved durability and better thermal characteristics.

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:510
  

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!