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Out of curiousity, how far is the top ring from the top of the piston (not the dome)?And how long is the skirt from the top of the piston?

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I was going to measure and post the length of the skirts and forgot to The pistons and rods are in the block now, sorry I would guess around 2.500 skirt length from the deck to the bottom based on measuring one of my old ross pistons for my pump gas 512 motor, they measure 2.550, they also have a 22 cc dish, the rings on them are .190 from the deck to the top of the top ringland, which has a 1/16 top and 2nd ring.The Ross pistons weighed 556 grams without pins, rings and oil ring spacer, the Diamonds weigh 521 grams bare with the dome The Diamond wrist pins are thicker, longer and heavier than the Ross wrist pins, the Ross pins are tapered and the Diamonds are not :shruggy Next time I will step up to a tool steel lightweight race wrist pins IHTHs

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The deck hieght is -.009 on one number 1 and right at +.003 on number 6

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so your going to assemble the engine like that?, really?

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The deck hieght is -.009 on one number 1 and right at +.003 on number 6

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so your going to assemble the engine like that?, really?

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It is assemble now, am I going to run it that way, I don't know I haven't made that decision yet, I will decide after measuring the rest of the deck hieghts and see if the machine shop cut the block wrong or if it caused by the rod , piston or stroke differences If it is the block I will probally try and use a different thickness head gasket, if it is a rod or piston I will fix it, if it is the stroke, I don't know yet