ATK Engines SPE3881800 Elite Series Short Block Features:

• Dart LS Next SHP Skirted Block features a full skirt design with a priority main oiling system, steel four bolt main caps and accepts a 4 or 6 bolt cylinder head
• Dart BILLET Crankshaft can handle over 2000 HP and outfitted with Center Counter Weights that adds material and strength to the center of the crank that counters the jump rope effect under high RPM and increased power
• Manley Pro Series I Beam Rods are fully-machined billet and have a heavier beam for forced induction applications
• JE Ultra Series Pistons include a thermal barrier crown coating, lateral gas ports, thick-wall wrist pins and a new forging technology for Massive Power and Boost right out of the box
• JE Pro Steel Rings maximize horsepower through precision sealing of combustion pressure. This ring pack will have a carbon steel top ring for high boost applications
• Calico Coated Bearings have a dry film lubricant to reduce friction and abrasive wear, provide intermittent dry lubrication and are not affected by dust or dirt
• Suitable for a Single or Twin Turbo application

ATK Engines SPE3881800 Elite Series Short Block Specs:

• Compression Ratios with .051 in. Gasket:
  • 66 cc= 10.65:1 / 68 cc= 10.4:1 / 70 cc= 10.2:1
• Bore: 4.125 in.
• Stroke: 3.622 in.
• Displacement: 388 ci.
• Crankshaft: Dart Billet w/58 tooth reluctor wheel
• Rods: Manley Pro Series I Beams 4340 Forged 6.125 in. w/ARP 2000 Bolts
• Pistons: JE Ultra Flat Top 2618 Forged with Thermal Coating, Lateral Gas Ports, .200 in. Pin
• Rings: JE Pro Seal with Carbon Steel Top Ring
• Camshaft Bearings: Installed & Positioned to OEM Position
• Freeze Plugs: Installed with Sealant
• Oil Galley Plugs: Installed with Sealant

ATK Engines SPE3881800 Recommended Components (Each Sold Separately):

• Balancer Internally balanced
• Flexplate Internally balanced
• Head Gasket .051 in. Compressed Thickness
• Melling Oil Pump 10296 with red spring
• 20W50 NON-SYNTHETIC Oil 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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