I wish I could get an engine dyno done for that. I'd dyno all my engines. Here it's a $500 flat fee so I use the chassis dyno, $75 min-$100hr or more depending on how long I'm on it.

My 365 cu in pulled 332 hp and 322 tq at the rear wheels, running lean. We pulled it to 6400 rpm.
Peak HP was at 6200, tq was at 4900, not too bad for a little old Pontiac 350.
Pretty sure we can break 350 RWHP fairly easy with some more tuning.