Where to go next? Low 11's high 10's??

Hot Metal said
I ran up to a 250 shot cheater kit on my stock '71 340 motor with no issues and also on my original 440-6 motor up to a 175 Big Shot kit with external oiling, no probs at all with forged pistons and a good fuel system for the NOS, I windowed a so called pro built s/roller 440 NA motor I bought that had an internal oiling system on it though, all I got out of that were the heads/cam and rockers, took me over a year to pay that off.
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How much cylinder psi would a 175 shot make ? the big block outer wall look awfully thin. My builder was pointing out the spots for me since I bought some power adder rods (molnar) just in case I wanted to go faster. But I don't know nitrous, how to do the timing retarding or want to try to find another 400 block. I'll leave it to the fuller wallet crowd.