New drag car

Same car. My friend told me to leave the converter in it and just run it with a little bigger chip. Should have left it alone. He said he wouldn't be afraid of 7000 in the 1/4 with a well built 440. Whats your thoughts? He was runner up last year at MoKan Mopar weekend with a white small block duster. I will be there with him. He also has a green duster he runs sometimes there. It runs in the 9.70's
what kind of rods does it have in it? if stock i would say no. I have eagle H-beams in my 440 and have shifted it at 7-7500 a few times to see what the car likes but don't remember what i was turning at the finish line. need to find out what your converter slippage is? do you know what your finish line mph is? thats to see if the converter is slipping to bad or not. also what size and stall was the one you took out?