H405CP versus stock magnum 5.9 pistons

TT5.9mag said

Trust the math. If you accurately measured 045 in the hole with the stock pistons and you added 025 to the compression height of the new pistons you should measure 020 in the hole with the new pistons and you should see a compression bump. The key here is accurate measuring. The balance is a non issue because any time you change the bob weight you should balance the rotating assembly.

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Yeah. I think you are right. As long as the catalog is accurate the math works.

I don't mean to be argumentative,but I'm not balancing what was supposed to be a low buck hop up for a pickup.Mallory metal isn't cheap.

We didn't even pay to balance the dirt track stuff we built when I was kid. We just kept the weights close and rolled with it. Guys thought I was wasting time by weighing each piston and rod combo and lightening them all to match the lightest one.

I would posit that of the millions of engines bored and rebuild with replacement pistons very few are actually balanced. I've seen big block Chrysler with 60 over cast pistons that weren't balanced and there had to be a lot of weight difference there.