e85 on the street??
i believe 13 to 1 or 13.5 to 1 is optimal compression for corn.
your gonna need aluminum fuel line too.
the only reason i see for running corn other then the emissions is that it allows you to run high compression on the street. compression makes power. the price is lower per gallon but you dont get as good of mileage so it almost equals out depending on the prices at the time.