440 pistons
On my engine I ran Hemi length custom rods
That answers that question then. A stock Hemi rod is 6.86" long, but uses a 1.031" wrist pin.
So you had custom 6.86" long Hemi rods with a 1.094" 440 size wrist pin in them.
10.725" 440 Deck Height
-6.86" Rod Length
-2.125" 1/2 the stroke on 4.25"
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1.74"
-1.685 440 pistons John has
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.055" in the hole, so John must have cut the block .055" to get it to a Zero deck height.
Tom