[Lugnut79]

So I finally got the ole 355 going again after the cam decided to wipe a couple lobes off and take everything else out in its path. Its all broke in and I've been driving it here and there but now I'm having a problem when I brake hard it almost wants to stall. If I rev it in neutral or park and let off it also wants to stall. Then if I give it a little gas it studders a bit then clears right back out. Driving it around it runs pefect. Is it the fuel sloshing around in the bowls or something? Its got a 750 Double Pumper with a Proform center section, Holley Electric Blue fuel pump with regulator set at 7psi. The Tank is full of 110 Cam2 so I know its not running dry when I hit the brakes. Any Ideas?

 

[lktna]

Are the floats set right? I had a problem with my Demon running out of fuel until I adjusted the floats. Just a thought.

 

[Lugnut79]

I haven't checked them yet. Would that affect it while braking as well?

 

[fasteddie]

I haven't checked them yet. Would that affect it while braking as well?

Absolutly! If they are too low it will run out of fuel if they are too high they will splash out fuel from the vent tube while braking!

 

[72Orange]

When I had the stumble/stall when braking it was that the floats were too high.

 

[SMLBLK66]

x 10 on the floats!!!!!

 

[levisnteeshirt]

i'd try ,,

i'd try giving it a lil more idle mixture screw ( open ) 1/4 turn or so. Sometimes that will fix alot.

Does it have power brakes ??

 

[chevyIIheavy]

is the converter the right size for the cam? if your cam has a lot of duration a stock converter wont cut it. i also agree with the floats as well just something else to look at

 

[NOGO]

There are vent extensions available to prevent fuel from moving through the vent tubes and flooding the carb. I took the budget approach and connected my vent tubes with a piece of fuel line that I cut a hole in the center of. When I put on my CPP 13" brake kit the inertia during braking would force the fuel out of the vents and flood my carb causing the same issue you mentioned. My float levels are perfect as well, so your float level may not be an issue.

 

[Lugnut79]

is the converter the right size for the cam? if your cam has a lot of duration a stock converter wont cut it. i also agree with the floats as well just something else to look at

The Converter is a Coan and stalls at 3800 with the transbrake. No there are no power brakes just the ole stock 4 wheel drums. What kind of vacuum am I looking for when adjusting the carb?