Have a standard bore 4.32 2295 TRW/Speed Pro pistons. Lets assume stock deck height, 6.76 stock rod, stock 3.75 stroke, and corrected 88cc heads using a 4.49 diameter gasket at .038-.040 thick compressed.
My swag is saying 9.6:1-9.8:1 or so.
I cant find much info on these pistons, as far as dome volume. Summit list them at -12 cc or so.. The negative (-) part is throwing me off.

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]