ATK SP31 LS 408CI Stroker Short Block -18cc Dish Pistons 58 Tooth

$4,829.00

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Lead Time: Estimated: 4 - 6 weeks

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Description

Engine Specifications:
• Block: Seasoned 6.0L LQ4
• Year Range: 2001-2007
• Bore/Stroke: 4.030” x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
• Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts
• Pistons: Manley 2618 forged -18cc dished moly skirt coated
• Rings: Plasmamoly
• Compression Ratios: 64cc = 10.2:1 / 68cc = 9.9:1 / 72cc = 9.5:1 (can vary due to deck height/gasket thickness)
• Camshaft Bearings: Installed & Clocked to OEM Position
• Freeze Plugs: Installed & Sealed
• Oil Galley Plugs: Installed & Sealed

Recommended Components:
• Balancer- Internal balance
• Flex plate/ Flywheel- Internal balance
• Head Gasket: .051” or per application
• Oil Pump: Melling #10295 with high pressure spring

Engine Info:
• Oil: 10W40 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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