Dyno a 7.5:1 400? Sure, why not?

Nice info, thanks for sharing this.
I've recently wrenched together a bone stock 400 as a simple cruiser engine.
Didn't change much on the stock internals, except for a different stockish cam and new cambearings.

I used steel headgaskets and 915-heads to up the CR a bit but I didn't cc or measure anything to find out where I was at.

Overal vacuum is fairly low still so I suspect the piston rings have seen better days.
Also still need to play with the ignition curve a bit as the engine doesn't feel strong at low rpm and also runs hot after some highway-time.