"The 5/16" fuel line you are running is too small"
I'll say it again your fuel line is fine. You can run 11's w/ a 5/16 ine and mech pump...even w/ a 440-6 in a B-body. If it's fuel issue you either have a clogged filter or you car is lean. changing the line to 3/8 won't do squat.
If you have 140 across the borad you have a compression problem...either your valves are a tad open or you don't have the 11:1 you thought you had. 106 is decent mph. Your 60 foot looks to be a tad high. I'd think you should be in the 1.65 range. If you can find a way to cut those 2 tenths at the gate you'll drop your trap et by 4. What squirters are you running? 31's would probably work...what jets? I'd think 78-86's would be a start and as for the PV if you are only pulling 3-4 lbs, I'm not sure where you'd start w/ that.