400?
If you only have 160 PSI Compression,then thats a VERY Good Place to start?I just did a 408ci SBC,+.040 400 with a .150 dome piston,and it had 250-260 psi.comp.Why are you using a cam with a 105?You ned to have at least 108-110.Maybe your blreeding off some comp.with the Cam profile???Have you check your Valve springs?I'll look for the # on the Cam i just installed,i know its a Lunati.But,i will get you a Grind #?Your on the rite Track?I beleive?
Later
Greg 8)