ATK Performance 520 Stroker Big Block Shortblock
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ATK Performance 520 Stroker Big Block ShortblockWhen only big cubic inches will do! This 520 stroker uses SCAT all forged internals to handle huge horsepower. Assembled and ready to bolt on your heads, cam, intake etc. Here's the specs.
- Block: Seasoned 460 block
- Bore/Stroke: 4.400 x 4.300
- Displacement: 520 C.I.D.
- Crankshaft: Scat 4340 Forged 4.300" Stroke Internally Balanced
- Connecting Rods: Scat 4340 Forged H Beam 6.700" ARP 8740 Bolts
- Pistons: Forged +36cc Dished With D Cup
- Piston Rings: Moly Rings
- Compression Ratio: 74cc=9.8:1/80cc=9.6:1
- Camshaft Bearings: Installed and Clocked to OEM Position
- Freeze Plugs: Brass Installed and Sealed
- Oil Galley Plugs: Installed and Sealed
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