Only 460hp

Timing set at 40 total, 72 front 80 rear holley double pumper. The tires were not being blown off.(street tires) Best pass of ten passes was the very first pass...9.43 in the 8th, 2.642 60. 6.45 330 on a .602 reaction .........I do hate the car with a passion. That's said, I have a dyno proven 500 hp 360 built by Shelton Racing Engines in Georgia but I dont have a tranny that would support that hp level especially with NOS as well as a weak 28 spline ford 9 in. And the motor is internally balanced requiring me to get yet another converter I can't afford. All in all, I want to start new and fresh as I dont have the cash to F around and change everything again when getting a whole car that doesn't need major work would most likely the better option. I have back issues so my labor input is very limited and I dont want to to end up on SSI the rest of my life. I have accepted the car is a slug and dont want others to fall in the trap I did. To add insult to injury, car only gets 9 mi to gallon and that's changing to a vacuum secondary carb for the ride home.
a stock 340 with some traction and a tune 60* 2.0 to 2.10 thats 7/10s of your issue
with that motor and traction should be 1.8s 60* theres 9/10s
timming at 40 cringe
tune the car 500 hp is in 11s