go with lower compression right off the bat. when ur blown, its not like .1-.5 or more points of compression will make a difference. take detenation right out of the question. DO NOT TRY TO MAKE EVERY POINT OF COMPRESSION POSSIBLE…cuz the gains will NOT be noticable, and ALL it does is bring you CLOSER to detenation.
i would go no more than 8.7:1 for a blower car