ATK SP97-B Gen III Hemi 392CI Stroker Short Block Boost/Nitrous Flat Top Pistons



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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 2000 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 with steel top ring gapped for boost/nitrous
• 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


Notes: ATK’s Boost/Nitrous short blocks are meant for engines running these setups. Bearing clearances and ring gap have been taken into consideration for this series of short blocks.


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.


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