ATK Engines 220A Engine Specs:

• Block: Machined GEN III Hemi 5.7L (2004-2008)
• Bore: 3.927” (Pistons size vary, final honing may be required)
• Displacement: 345ci
• Main Journal Type: Mopar GEN III Hemi
• Engine Block Material: Cast iron
• Engine Block Style: OEM
• Engine Block deck Height: Standard Deck
• Main Bolt Style: 2 Bolt
• Main Caps Included: Yes
• Main Cap Material: Powdered metal
• Main Cap Fasteners Included: Yes
• Main Bearings Included: No
• Camshaft Bearings: Dura-Bond, installed and clocked to OEM position
• Freeze Plugs: Brass, installed and sealed
• Oil Galley Plugs: Installed and sealed

ATK Engines 220A Block Specs:

• Camshaft bearing line boring in Standard
• Pos 1:  2.2921 in. – 2.2931 in.
• Pos 2: 2.2765 in. – 2.2775 in.
• Pos 3: 2.2607 in. – 2.2617 in.
• Pos 4: 2.2449 in. – 2.2459 in.
• Pos 5: 1.7187 in. – 1.7197 in.
• Main, line honed: 2.7522 in. - 2.7525 in.
• Cylinder honing ID:  3.9270 in. - 3.9278 in.
• Minimum deck height: 7.880 in. - 7.870 in.

Disclaimer: The recommended components listed are ATK’s recommendations of parts to be used, applications vary and your build may need something different. Contact ATK for a recommendation if you are not certain about a component to use. It is the customer’s responsibility to verify components will work in their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. . ATK reserves the right to substitute parts used in engines if necessary.

BEFORE USING THIS PRODUCT PLEASE READ THE FOLLOWING

Engine assembly should only be attempted by experienced engine builders.

Warranty
This Block is sold without warranty or guarantee of any kind. Under no circumstances shall ATK be liable for any special, incidental or consequential damages of any kind from the purchase, installation, or use of this block. Please Note: Any Claim of damage or defects in machining or Clearances must be made prior to assembly.

Prior to Assembly

1) Checking fitment, compatibility, and purpose of parts used in this block is the responsibility of the engine builder.

2) All visual inspection, measurements and clearance checks should be done prior to assembly.

3) Any claim of damage or defects in machining must be made prior to assembly.

4) This block was torque plate honed. A torque plate must be installed prior to any cylinder bore measurements

5) This block is finished honed to accept Moly, Chrome and Cast Piston Rings. Ring end gap should be checked at time of installation.

6) The block deck has been surfaced finished. Piston deck clearance should be checked at time of assembly.

7) Will accept up to a 4.000” crank using most “H” Beam Rods.  Connecting rod to clearance to other components must always be checked before completing assembly.

8) Final wash. This block has been treated with a rust inhibitor. This block must be thoroughly washed before assembly. Use hot soapy water and rinse with fresh water then dry thoroughly to prevent rust.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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