Static Compression to Octane

Ask your builder for the measured specs he used ( combustion chamber volume, volume of the area from the top of the piston, If the deck is above the piston top, Gasket volume and the formula to calculate his answer. It will be good info in the future for any other project you may want to build and will help you in your parts choices.
Here is a posting by Krazycuda a few years back.
http://www.forabodiesonly.com/mopar/showthread.php?t=278215