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Discussion Starter #1
does anyone make a forged piston with about a 15 cc D dish or are they all full 360 dishes
 

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I think DIAMOND's catalogue "D" dish is about 25 to 30 cc's but, they'll make any dish volume you want.
 

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Inverted Dome

JE makes an inverted dome (essentially the same "D" shape), but again the dish is -39 cc's. I believe Diamonds are -36 cc's and have a .005 lower compression height on their stroker pistons (1.345" on Diamond vs 1.35 on JE). The stocker piston dish on both is very big in my opinion and leaves you with little choice other than a custom piston to get around 10 or 11:1 on most popular stroker combinations (4.3 & 4.5 stroke, 72 to 80 cc heads). The flat tops leave you around 12.5 or up.

Either will do custom dishes. In my opinion you can't go wrong with either of them. I know there are many custom pistons available, but I'm not aware of any other "D" dish off the shelf forged pistons, I'm sure if there are someone will chime in.
-TOM-
 

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Discussion Starter #5
i thought the probe pistons were full dish instead of the D dish though
 

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Discussion Starter #10
yes bret is right i'm looking for the quench class rules state 98 pump gas max and cast heads so i'm looking for every little bit of quench i can get to prevent detonation
 

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If I recall correctly one of the piston makers, I am thinking J&E but could be wrong list thier flat top as 12cc valve reliefs. You asked for 15cc dish well thats only 3 cc difference and no issues with the quench due to a open dish. I am thinking you could take up that extra 3cc by either cutting the valve reliefs slightly larger or some porting, polishing work on the combustion chamber pretty easy.
 

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Flat Tops

If I recall correctly JE's flat top is -3 cc's, like most other forged stroker flat-tops. If you find a -12cc flat top or otherwise let us know.
Thanks, -TOM-
 

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Discussion Starter #14
let me ask one other thing then. if the only shelf pistons in the flavor i'm after have 25cc dish which is for stock stroke stock rod would there be any possible to mill .2" off the piston and use a chevy 6.8 rod? if it would be possible what kind of dish would that leave me with? i haven't heard the difference in wrist pin sizes so i don't know if it works surely someone here does though
 
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