New ATK Chevy LS3 415 Short Block 24 Tooth -10cc Dished SP67 Engine

The ATK SP67 Chevy LS3 415 Short Block is designed for building high compression engines. Featuring aluminum engine block, this short block includes forged 4340 steel crankshaft, forged aluminum piston, and forged 4340 steel connecting rod for exceptional sturdiness and endurance.

Engine Specifications:

• Block: New GM L92/LS3 Aluminum
  
• Bore/Stroke: 4.065 x 4.000
  
• Displacement: 415 C.I.D.
  
• Crankshaft: Manley 4340 Forged 4.000″ Stroke Internally Balanced
  
• Connecting Rods: Manley 4340 Forged H Beam 6.125 ARP 8740 Bolts
  
• Pistons: Forged +10cc Dish
  
• Piston Rings: Moly Rings
  
• Compression Ratio: 64cc=11.1:1/66cc=10.8:1/70cc=10.3:1
  
• Camshaft Bearings: Installed & Clocked to OEM Position
  
• Freeze Plugs: Brass Installed & Sealed
  
• Oil Galley Plugs: Installed & Sealed

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!