Engine stall on hard braking (demon carb)- HELP

[DAVID GAGNARD]

Originally Posted by Grubby

My Cobra has a 351W with Edelbrock heads, Performer cam and intake with Demon carb. It runs really good and was dyno tuned by the previous owner. I think it is a speed demon with vac secondaries.

During hard braking the rpm drops and stalls. I suspected fuel sloshing from the rear bowl and flooding the engine, so I connected both bowl vents with a piece of fuel line. No change.

I have set the float level from bottom of the sight glass to 3/4 with no apparent change.

The car runs fantastic in all rpm ranges. The only issue is stalling.

Any suggestions?

John

No suggestions to your problem, but my road race car with a 650 Demon has done the exact same thing from day one, I've tried re-setting the floats and a few other things and nothing really helps..... the only thing I do is downshift and brake while the clutch is out so the engine keeps running.....

BTW: my street car,65 fastback with a 600 DP Holley DOES NOT do this!!!!!!!!!!!!!!!!!!!!!!

I have no clue or answer...........

David