I've built lots of SBC's, but the big blocks I've owned were either stock, or already built when I got them. Is there any different thinking when building a Big Block verses building a small block ??? How high of compression on pump gas ??? With the SBC, I could go 10.2 to 1 on 91 octain aslong as everything was tuned right. Normally I built them for 9.8 to 1. Would 9.6 to 1 be okay in a big block ??? What about head ??? Sence torque is the goal, would I want ovel ports or square ??? Any tricks with the rods ??? Any prefered pistons ??? Any advice on building a big block Chevy ???