Do I need a new converter?

I am not a politician. Lol
Its a dog for an eddie stroker.
My stock stroke 360 is 4/5 tenths quicker and i doubt is lighter( i am 320 driving it).
First 3 things i would look at to get it to run better
1. Put an 8 Inch convertor in it( have one in mine and drive it everywhere). It will be way more effecient than that 10 inch. Trust me.
2 throw that cam in the garbage can.
3. Open up heads( and check them)
A stroker motor being raced deserves a flat tappet cam. I would step up to something AT LEAST in the mid 250’s at 50. Something like you have i would probably recommend the exact same cam i am running in my stock stroke( hair big for what i have but was on the shelf) 260/264 565/565 with 1.5 rockers
I replaced a cam like you have with the one above. Had my eddies whittled on a little, and milled them, and swapped from a convertor like you have to a real convertor and went from 12.20’s to a new best of 11.26. From 107 mph in the 1/4 to 119 best.
Cam and convertor first. Open up the heads some next.
Should run ultra low 11’s, 7 teens at worst. This all assumes you are getting fuel and the fuel delivery isn't junk( carb/ fuel injection)
The 60 foot will pick way up, as will the rest of the incrementals
With a bone stock shortblock 360( stock rods, pistons and crank) I have been 1.52 60 foot. Usually 1.54/55
You are giving up a ton there. A ton. 1.70 is horrible not spinning. Should be 1.50 ish all day

I figured I'd go 1.50's 60' with this combo too.. I'm pretty new to racing so all of this is a learning curve for me. I'm going to start with fuel delivery to make sure there isn't anything drastically wrong there...Then invest in a converter. I was surprised to see after doing the test in post #2, that it flashed at 4100ish. Is it normal for a converter that loose to not be able to hold with footbraking above 2400ish RPM?