ATK Chevy LQ9 Gen IV 370CI Short Block 58 Tooth Flat Top SP95-G4 Engine

The ATK Chevy LQ9 Gen IV 370CI Short Tooth Flat Top lets you build a tough and powerful engine for your muscle car with less effort. Featuring 100% GM Gen IV blocks, this unit is assembled with forged pistons and sealed plugs to give enough capacity to deliver a solid performance. This short block can also be used for a Gen III application using a conversion package.

Engine Specifications:

• Block: GM 6.0L Iron Gen IV
  
• Bore/Stroke: 4.000" x 3.622"
  
• Displacement: 364 C.I.D.
  
• Crankshaft: OE Reground 3.622" Internally Balanced 58 Tooth
  
• Connecting Rods: Scat 4340 Forged I Beam 6.125" ARP 8740 Bolts
  
• Pistons: Wiseco 2618 Forged -3.2cc Flat Top
  
• Piston Rings: Wiseco GFX with Steel Top Ring
  
• Compression Ratio: 64cc = 10.6:1 / 68cc = 10:1 / 72cc = 9.7:1 (can vary due to deck height/gasket thickness)
  
• Camshaft Bearings: Installed & Clocked to OEM Position
  
• Freeze Plugs: Brass Installed & Sealed
  
• Oil Galley Plugs: Installed & Sealed
  
• Weight:285
  

Every great build needs a solid foundation! For that reason, we take the hard work out of the picture by selling short blocks that are ready for you to complete yourself. Our GM Short Blocks are most commonly packaged as the engine block assembled with Pistons, Piston Rings and Crankshaft installed.

ATK specializes in muscle. With the highest quality internal parts and Dyno Proven combinations of every engine built, ATK is able to add the most bang for your buck and back it up with an industry leading warranty.

Don't forget the engine paint!