Technical engine stall when stopping

I have dual 94s on my flathead. When I hit the brakes and stop the engine wants to stall and then it speeds up. If I set the idle high enough so that it don't stall when stopping then the normal idle is way too high. I tried raising the float level thinking that fuel is sloshing away the jets but that didn't help. Any ideas?

 

Sounds like timing or vacuum.

 

Check the float levels. Running fuel level should be 11/16" below the gasket surface on the top of the bowl. Requires a "standpipe" tool that can't be bought any more. I described how I made mine in another thread. I hope it's not confusing. Oldness does that to a fella.

 

Duals. What air filters?

 

^^^^
What x38 said.

 

6 degrees BTDC at idle. Mechanical advance dist.

 

K&N

 

Do yourself a favor.
Remove the element from each of those units.
They may work well on some engines but starve a flathead.
I’ve used these with good results.

https://www.macsautoparts.com/air-c...p-50884-with-black-outer-ring-49-50886-1.html

 

Idle mixture

 

If you have power brake booster, disconnect it's vacuum line then test. I had the same problem, searched everything, then tested the booster. Found it had a leak. Might help.

 

Could this be an issue of having a Load-a-matic distributor but non-Load-a-matic carbs, or vice versa?

http://m571.com/yblock/loadomatic.htm

 

Im with the float level camp.