My problem is the engine kills on hard braking. If I do a hard stop from any speed with the clutch in, the RPMs drop to about 700 and the engine stumbles until it dies. Even from 15 MPH! Moderate to slow stops are not a problem.
I bought a Holley dashpot to use on the 735. But I hated driving it on the street. Coming up to a stop it took about 15 seconds to return to anything resembling a normal idle. I have dual springs on and even they could not close it faster.
I also don't think the dashpot will help because if I put the clutch in and establish a normal idle, then stab the brakes it dies.
this is what i have to do to my 4x4 carbs to make them work n steep ground,also helps on hard acceleration or hard stops, its just a piece of rubber line with an oppening to vent the bowls, try it, if it fix,s the problem then its your rear bowl level too high, if it dose not fix it then the front bowl level is too low.
edit for, also have to use spring loaded needle and seats. it could be a problem with your needle and seat in the rear bowl.
Not sure if it is clear here but the only pic i've got on file. The bowl vents face the other way. This is for acceleration, they could be turned around for braking.
When i tried a hose joining the two vents it still dumped gas at the middle. The tall vents threw gas from the front carb directly into the rear carb. The vent angling back over the bowl stopped it all but you can't angle them both or you won't get the air cleaner on.
Go on a wiring search in and around the pedal assembly.
July 25 2012, 4:42 PM
Had a car in the shop years ago with same scenario, hit clutch, vehicle died. We found a jumble of underdash wiring and the B+ wire to the ignition circuit was grounding out on the linkage when driver stepped on the clutch pedal. Doesn't it seem kinda odd that you have the same scenario with two different engines?