350 hp out of a fairly stock 340

In 1978 My modified 340 out ran my buddies 68 camaro 327 that had same mods. Both of us had cars so fast that they jumped beer cans.
I once had it wide open on the interstate, we went so fast we got where we were going before we left.
We would both put 100 dollar bills on the dash ahh never mind you would never believe me