ATK SP112 Small Block Ford 427 ci. Stroker Short Block Engine Specs:

• Block: Dart SHP 351W SBF 4-Bolt 1 pc Rear Seal w/9.5 in. Deck Height
• Bore/Stroke: 4.125 in. x 4 in.
• Displacement: 427 ci.
• Crankshaft: Scat 4340 forged internally balanced
• Rods: Scat 4340 H beam with ARP 8740 bolts
• Pistons: 2618 Forged -26 cc dished
• Compression Ratios w/Head cc: 58 cc = 10.4:1 / 64 cc = 9.8:1 / 70 cc = 9.3:1 (can vary with head 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

ATK SP112 Small Block Ford 427 ci. Stroker Short Block Engine Recommended Components:

• Balancer: Internal balance
• Flexplate/Flywheel: Internal balance
• Head Gasket: .041 in.
• Oil: 10W30 Non synthetic for first 3000 miles

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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