ATK Performance 408 Stroker Shortblock, roller block, forged
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SKU: ATK-SP25
Part# SP25
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ATK Performance 408 Stroker Shortblock, roller block, forged
This shortblock is a great starting point for a naturally aspirated or boosted street engine capable of 600+hp. 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 4.00
- Displacement: 408 C.I.D.
- Crankshaft: SCAT Nodular 4.00" Stroke 1 Piece Seal Internally Balanced 0oz.
- Connecting Rods: Scat 4340 Forged I Beam 6.200 w/ARP 8740 Bolts
- Pistons: Forged +22cc Dish w/2 Valve Reliefs
- Piston Rings: Moly Rings
- Compression Ratio: 58cc=10:1/64cc=9.4:1
- Camshaft Bearings: Installed and Clocked to OEM Position
- Freeze Plugs: Brass Installed and Sealed
- Oil Galley Plugs: Installed and Sealed
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