flywheel horse and rear wheel

I have the info you're looking for but like was said before there's so many variables that you can't do a real comparison.

My 408 made 497hp/519tq on an engine dyno with no air cleaner, mufflers or accessories. The same engine in my car with air cleaner, exhaust with mufflers but no tail pipes and an alternator made 407hp/407tq. That's with a 727 and a Dana 60 rear end. That's 18 percent parasitic loss and about what we were expecting. Hope this helps.