[68lemansman]

I have a 1970 gp 400 with a msd rotor and the carb i had on it was a 750 but i replaced it with the 650 for gas reasons and also because when i got the car the 750 was butchered basically the whole choke flap assembly was missing. The car ran fine with the old carb on it even without the choke flap. But the car now runs and starts it has a little bit of rough idle when starting but after warming up she runs fine. I just did a tune up on the car (new wires and plugs) When i come to a stop and then go to get on it the carb pops like and hesitates and stalled out but it then takes off. I dont know the number off the carb i can get them. Im not near my car right now but i can post them later. I havent done anything to the distributor or nothing else, but just replaced the carb.