Any desk top dynos out there

Ignore the "Chev LT1 exhaust manifold" title in the exhaust system specs, used as starting point and forgot to change name.

If you see any errors in the specs let me know and I can make correction and re-run program. Note I don't have any air cleaner on carb so no restriction, I'm sure you're running one.

What water temperature does car typically run at? I've entered 165 which may be low in your case.

I modeled my 422" stroker for my car before it went on dyno, my predicted results were optimistic at higher rpm and actual exceeded prediction down low so something wasn't right in my model. Will play with model some more and see if I can get mine closer. I also found on dyno that I picked up power by taking a degree out of timing at higher rpm, was told this is common drag racing trick - use more timing to get car moving then pull a small amount for top end charge once chamber running hot and not needing so much. In my case was easy to do with MSD Digital 7, maybe you could try a degree out of total timing to achieve same thing in your running 4000-6400 range? Software doesn't get the same result as actual regarding timing with hot chamber.