Excellent post. "this is what i did and this is what happened!"
Cannot dispute your post, Thanks!
...and the stock rebuilt 426 hemi dynode 425 hp at 5000 rpm just like the factory rated it.
I don’t know how they screwed that up, but I watched a right out of the car 426 make about 430 before tuning and when the dyno guy was done, it was 500 HP. It was bone stock. I forget the name of guy who had the dyno and tuned it, but he was a sharp cat. The guy who owned the engine was a friend of my dads, and he asked my dad to go to the dyno with him. I got to tag along. It was late 1970.
To take a 426 and get 425 HP out of it is pretty sad.