The ATK 410 5.9 Magnum short block has 4.040" KB pistons, Scat 4 inch cast crank, Scat I beam rods. Pistons are D dished and the quench shelf is positive above the deck. I have not measured it yet. I will be doing 'Clay' testing when I put the heads on.
For $2500 it is a well thought out hunk of iron. The compression will be around 10.2:1 with the Edelbrock aluminum heads.
Retired, US ARMY 1973-1994
ASE mechanic, Electrical 1994-1997
Retired GTE/VERIZON/FRONTIER 1997-2015
Posting cheap tech help (CRAP) here since Nov 97, 1000's of posts, some may be good.
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