• Block: Seasoned OE non roller block 1988-1993
• Bore/Stroke: 4.040” x 3.500”
• Displacement: 351W
• Crankshaft: OE 1 piece seal external balance 28oz
• Rods: OE powder metal
• Pistons: Hypereutectic +19cc D cup dish
• Compression Ratios: 58cc = 9.4:1 / 64cc = 8.7:1 / 70cc = 8.2:1 (can vary due to deck height/gasket thickness)
• Rings: Plasmamoly
• Camshaft Bearings: Dura-Bond, installed and clocked to OEM position
• Freeze Plugs: Brass, installed and sealed
• Oil Galley Plugs: Installed and sealed

Recommended Components:
• Balancer: External balance 28oz
• Flexplate/Flywheel: External balance 28oz
• Head Gasket: .047” or per application

Engine Info:
• Oil: 10W30 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.

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