Stalls during brakeing

[Slide]

Thanks for all the suggestions. I've been gone for a while. This is a Bill Mitchell preped carb and has the white plastic whistles. I am currently haveing the distributor recurved as it was still advancing at 4500. Hopefully I will get it back and running again this weekend so I can try a more precise float level adjustment an 4 corner idle mix. I will post again after some more trial and error.

[bkozlow]

During the 60-70's the major car manufacturers added to their carb setups a thing called a DASHPOT valve. This is basicly a vacuum operated plunger. The valve is attacted to the carb at the left front carb stud. It is a vacuum diaphram, a line connected to a vacuum port on the carb and on the other side an adjustible bolt. This bolt then moves as vacuum in the engine changes. The purpose of this was to cushion the last 500 RPM when the throttle closed quickly. One of the problems with carbs is there a lag in its ability to react to changes in throttle position. The dashpot slowed the final closing of the throttle so the carb could catch up with the new leaner running position. Look at any Holley of the 60-70's on an automatic and as well as some manuals and it will definitely have a dashpot valve.

[niles]

slide;

Your getting good advise and its probably a float level adjust issue.

I just wanted to share a similiar problem that I had and the unusual solution. The car was a Porshe with 4 webbers that would bog coming out of a hard corner. everybody said float level; messed with in for months, no success. Finally gave in and made a appointment with "Cadrobbi" of S. Calif(super porche geru).

He appeared after waiting for 2 months to get an appointment; him in his white Dr's smock. Showed him the problem, returned to shop, he put a small level on the carbs and it showed a slight down bubble, he put a jack under the front of the car to level the carb, readjusted the floats, said "that will be $100 and its fixed." It was, never hesitated again.

gn