Paging Scott72
 

Scott I was running a friends 850 Holley with Mech 2nds.
That produced the best dyno run.
It was not even an HP series,but it performed very well.
From lowend to higher rpms.

I would say a good place to start ,if you have an 850 already.
Stock power valves (new)
32-34 Squriters get a few ( I have 35s on my right know)
80s in front and 82s in rear (jets)

I am going to run the boat with a 750 Holley Vac 2nds first.
Then run my 850 Holley with 35 Squirters 80s and 82s

I will also try the 850 with 82s and 84s


I still have alot to learn about carb's.
The best advice on carbs buy new if you have some extra cash
Deamon or Holley

I did have a Deamon on my old motor and it ran great and looks much cooler than the Holley's

Sorry I could not be more accurate on the 850 I ran on the dyno
I was wanting to match those numbers myself.

Thanks Nobuget