408ci LS 1000HP Rated Power Adder Engine Longblock

BoostDistrict is proud to announce that we finally have an affordable Long block that is rated for 1000hp and 15psi Boost (turbo or supercharger).

Introducing our 408ci LS 1000HP Rated Power Adder Longblock. This engine is perfect for those looking for a budget-friendly option without compromising on strength. With its capability to handle high levels of boost, you can feel confident in its performance. 

Engine Specifications:
• HP: 550 Naturally Aspirated HP
• TQ: 535
• Block: GM 6.0L Iron LQ4 with ARP main studs
• Bore/Stroke: 4.030”x 4.000”
• Displacement (cu.in): 408
• Crankshaft: Manley 4.000″ Stroke Internally Balanced 24 tooth Reluctor wheel
• Rods: Manley 4340 Forged 6.125” H Beam with ARP 2000 Bolts
• Pistons: Forged
• Compression Ratio: 10.2:1
• Rings: Total Seal CS/AP With Steel Top Ring
• Camshaft: Hyd. roller
• Cam Specs: 226/230 @50 .600/.575 113LSA
• Cylinder Heads: LS3 aluminum 68cc 2.165”/1.590” valves
• Rocker Arms: OE powdered metal 1.7 ratio with Trunnion Upgrade
• Oil Pump: Melling 10296 High Volume

Recommended Components:
• Oil- 10W30
• Oil Filter: Wix
• Fuel System – OE EFI System or Aftermarket
• Intake – Stock Fuel Injected or Aftermarket
• Balancer- Stock Internally Balanced
• Flex plate/Flywheel- Stock Internally Balanced
• Timing- Set to Factory Specifications Via PCM Module (Tune Required)
• Spark Plug: NGK BR7EF (#3346)
• Tuning: Chassis dyno tune required
• Firing Order- Stock
• Fuel – 91+ Octane
• Recommended Stall Converter- 2800+ based on application
• Headers- 1 7/8”+ depending on application

Notes: This engine is designed for mild forced induction applications up to 15PSI.