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I talked to Diamond and for about $35 for the set
they will move the pin height if needed and other
things as well... I have chevy blanks in mine that
the valve pockets are mopar and I had some dish put
in to lower the compression a little... they will treat
you well and they have been quick.... the last set
I got took 3 days for my Rampage...but I also know
the owner





Just so you know, it's about 40.00 dollars PER CHANGE to shelf stock and you're allowed UP TO TWO CHANGES. I’m a Distributor for Diamond, Let me know if I can help.




Dan,

Didn’t they used to give you 2 free changes?

So there’s a 2 limit change for stocking numbers now?

What if I want 3 or 4 total changes?





AFAIK changes were never FREE. If you want more than two changes you'll go to a full custom design and price. If you think about it, it makes sense to do it that way. We're lucky they allow us to make changes like that, most piston companies won't do that for such a small charge.


machine shop owner and engine builder