At 8.5:1 you could have a decent street motor with a smaller cam... of course you'll be giving up a lot of tq/pwr compared to the blower but you could probably get away with running on regular gas... I'm thinking something with a duration around 218-220* at .050 on around 110* lobe separation will be in the ballpark... give a call to your favorite cam company and see if they can suggest a good cam for your combo.

-Chris