Not to be nitpicky, but just in the interest of accuracy, it was not to the wheels. The Dynapack 3000 is to the axles. Hub dynos show 10-15% higher than wheel dynos all the time, and you can find references online to Dynapack in particular sometimes running higher percentages than that.
It is...
About that ringer by Jim Wangers: Great bit of history, here, though. I love the story.
https://www.streetmusclemag.com/news/restored-ringer-gto-to-roll-out-at-gm-carlisle/
Read it. Great stuff!
And he got a 13.1 et. Much better than the 15s the car normally ran ("a dog" said Hot Rod...
And another point here is that the GT or Dark Horse is coming in with just a little over 300 cubic inches.
500 horsepower from a little over 300 inches would have been unimaginable 50 years ago, 40 years ago, 30 . . . 20, heck 10. The GT was putting out 435 from this little engine ten years...
So I read the link to the L88 dyno session. We have to take him at his word about "stock," but I did read (A) a dynapak 3000 generous dyno, (B) open headers and (C) carb replacement. Oh, he mentioned that he had the original Chevrolet numbers matching carb, but did he install it on the engine...
Nostalgia and sentimentality, but not real world. Everybody has to listen to the guy talk about his new car bought at the dealer that would pop a wheelie on launch and run 10s . . . it's BS. Cars have come a long way.
426 Hemi was 425 horsepower, and that was gross, not net, on a dyno with...
In all seriousness, stickier tires will help a lot. I am running Michelin Pilot Sport 4S tires (315/30 on 19 x 11 inch wheels on the rear), and they stick pretty well on the street.
And there is a big difference in a 480, 486, 500 horsepower engine and a 350 horsepower 90s Corvette engine or...
I know you are just driving it on the street, and therefore cannot hammer it too long or continuously, and I understand it is February, but what has the difference been in CHT and inferred oil temperature?