Great foundation for a street machine or cruiser, built with high quality parts for durability.

Block Information:

• Seasoned OE roller block 1987-1995
• Bore/Stroke: 4.040" x 3.400"
• Displacement: 347ci
• Camshaft Bearings: Dura-Bond, installed and clocked to OEM position
• Freeze Plugs: Brass, installed and sealed
• Oil Galley Plugs: Installed and sealed

Rotating Assembly:

• Crankshaft: Scat nodular iron 
• Balance: External 28oz 
• Rods: Scat 4340 forged I beam 5.400" with ARP 8740 bolts
• Compression Ratio: 58cc= 10.5:1 / 64cc= 9.6:1 / 70cc= 9.1:1
• Pistons: 2618 forged flat top -11cc
• Rings: Plasmamoly
• Balancer: External balance 28oz (included)
• Flexplate: External balance 28oz (included)

Recommended Components:

• Flexplate/Flywheel: External balance 28oz
• Head Gasket: .047" thickness or per application
• Oil: 10W30 Non syntheitc for first 3000 miles
• Oil Filter: Wix or K&N per application

Please CLICK HERE for ATK Warranty