I had a 61 chevy k20 years ago that I conterted over to newer k30 running gear with a flatbed/hoist .
the old rust bucket had 4.55s with a limited slip front end /4.56s and a locker in the rear .sat 1/2 mile in the air with eagle alum duallies all around.
I ran a 415" sbc with .510 lift cam and a big fat 800ish cfm quadrajet on it to screw with peoples heads when they looked under the hood!

That old pig would light those duals up at 35-40 and try and twist the truck in half at the same time,it was a riding pulling up to kids in cars at stoplights and seeing the look on their faces!
After the 1st 100' most of them wanted nothing to do with it and started looking for a different street to get off on.

Ive still got that motor someplace in a corner.