ATK Performance 347 Stroker Shortblock, all forged internals

ATK Performance 347 Stroker Shortblock, all forged internals

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$6,033.15

SKU: ATK-SP20

Part# SP20

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ATK Performance 347 Stroker Shortblock, all forged internals

This shortblock is a great starting point for a naturally aspirated or boosted race engine capable of 500+hp, more with a main girdle. Assembled and ready to bolt on your heads, cam, intake etc. Here's the specs.

  • Block: Seasoned OE Roller Block
  • Bore/Stroke: 4.040 x 3.400
  • Displacement: 347 C.I.D.
  • Crankshaft: SCAT 4340 Forged 3.400" Stroke 1 Piece Seal Externally Balanced 28oz.
  • Connecting Rods: Scat 4340 Forged H Beam 5.400 w/ARP 8740 Bolts
  • Pistons: Forged +5cc Flat Top w/4 Valve Reliefs
  • Piston Rings: Moly Rings
  • Compression Ratio: 58cc=10:4/64cc=10:1
  • Camshaft Bearings: Installed and Clocked to OEM Position
  • Freeze Plugs: Brass Installed and Sealed
  • Oil Galley Plugs: Installed and Sealed

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