Description
Engine Specifications:
- Block: Gen III Hemi 2003-2008 with ARP main studs
- Bore/Stroke: 3.927” x 4.050”
- Displacement: 392CI
- Crankshaft: Scat 4340 forged internally balanced
- Rods: Scat 4340 forged H beam 6.125” with ARP 8740 bolts
- Pistons: Forged -2cc flat top
- Compression Ratios: 81cc = 9.8:1 / 85cc = 9.4:1 / 89cc = 9.1:1 (can vary due to deck height/gasket thickness)
- Rings: Plasmamoly
- Camshaft Bearings: Dura-Bond, installed and clocked to OEM position
- Oil Galley Plugs: Installed and sealed
Recommended Components:
- Balancer: Internal balance
- Flexplate/Flywheel: Internal balance
- Head Gasket: .028” or per application
Engine Info:
- Oil: 5W/20 Non synthetic for first 3000 miles
- Oil Filter: Wix or K&N per application
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’re 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.
| KEY SPECS | |
|---|---|
| MFG. Part # | SP97 |
| Brand | ATK Engines |
| Engine Displacement | 6.4 liters |
| Piston Material | Forged Aluminum |
| Crankshaft Material | Forged 4340 Steel |
| Connecting Rod Material | Forged 4340 Steel |
| Engine Balance | Internal |
| Rear Main Seal Style | 1-piece |
| Oil Pan Included | No |
| Timing Cover Included | No |
| Harmonic Balancer Included | No |
| Flexplate Included | No |
| Flywheel Included | No |
| Air Cleaner Included | No |
| Spark Plugs Included | No |
| Spark Plug Wires Included | No |
| Computer Included | No |
| Wiring Harness Included | No |
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