The 340 is the biggest POS V8 Chrysler ever made.

Ever have one make power at 8k? I promise you you haven't. But I can tell you even 1965 SBC oiling will oil to 10k with no oil mods. You ain't doing that with a Chrysler.

If you say you have, you lie. I've posted, at length what it takes to do that with a Chrysler. Maybe you should read up on it.
Dont have to spin it to 8k to make hp. Thats what big blocks are for.