ATK Chevy 540CI Engine 660+ HP Mid Dress HP42M

Item #22601

Made in the USA
ATK Chevy 540CI Engine 660+ HP Mid Dress HP42M
ATK HP42M Chevy 540CI Engine 650HP
* ** THIS ITEM IS TEMPORARILY OUT OF STOCK *** FREE SHIPPING on ATK Engines. This item ships directly from the manufacturer and is not available for store pickup. Some engines are made-to-order or can be backordered. Delivery can be delayed up to 5 to 6 weeks but typically ship within 2 weeks.
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Details

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!
Engine Paint

Contents

ATK High Performance GM 540 660+ HP Stage 2 Long Block Crate Engines


Specifications

Engine Information:

• Oil: 10W30
• Oil Filter: Wix or K&N Recommended Per Your Application
• Fuel Delivery: Quick Fuel Carburetor 850cfm #Q-850
• Intake Manifold: Edelbrock Performer RPM Air-Gap Dual Plane #7562
• Spark Plugs: Autolite #AR3934
• Spark Plug Gap: .035"
• Harmonic Balancer/Damper: Professional Products Internally Balanced 8" #80004
• Flex Plate / Flywheel: Internally Balanced 168 Tooth
• Timing: 34-36 Degrees Total
• Water Pump: Long Water Pump
• Firing Order: 1 8 4 3 6 5 7 2
• Exhuast: 2 1/8 Headers
• Fuel Pump: Holley 130GPH Mechanical #12-454-13
• Fuel: 91+ Octane
• Ignition: MSD Pro Billet #85551
• Automatic Transmission Stall Converter: 3000+


Accessories

Recommended Components:

• Carburetor: Quick Fuel 950cfm mechanical secondary no choke #793-Q-950
• Fuel Pump: Holley mechanical 130gph #510-12-454-13
• Spark Plugs: Autotile #417-3934
• Spark Plug Wires: 8mm

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.


Shipping Instructions

Shipping is free and lift gate will be provided.


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