ATK Engines HP111 5.7L Hemi Crate, 498 HP

ATK Engines HP111 5.7L Hemi Crate, 498 HP

Engine Specifications:

• HP: 490+ Estimated
• TQ: 490+ Estimated
• Block: Gen III Hemi 2003-2008
• Bore/Stroke: 3.920 x 3.580 (Bored)
• Displacement: 345CI / 5.7L
• Crankshaft: OE Cast
• Rods: OE
• Pistons: Hypereutectic 9.6:1 compression
• Rings: Moly
• Camshaft: Comp Cams Hyd. Roller
• Cam Specs: 220/30 @50 .596/.582 111LSA
• Timing Chain: OE
• Cylinder Heads: OE Hemi 85cc/161cc 2.00/1.50 OHV
• Rocker Arms: OE Shaft mount

Engine Info:

• Oil: Conventional / Non synthetic 5W/20
• Oil Filter: Wix or K&N
• Timing: Per OE Specifications
• Tuning: Computer ECM Tuning REQUIRED
• Spark Plug Gap: .035”
• Firing Order: Per OE Specifications
• Octane: 91+
• Stall Converter: Stock
• Exhaust: 1 5/8 Headers

Notes:

TRUCK only applications WITHOUT MDS-MDS holes are plugged.

An ECM Tune is required. A complete check of the fuel system is HIGHLY recommended to avoid fueling issues that can lead to fuel wash and other catastrophic failures that are not covered under warranty (Injectors, Pump, Filters, Etc). With this camshaft Comp Cams made 47HP+ over the factory ratings and had strong mid-range gains.