I have a 348 in my 59 spartan 100 that I finally got on the road. The problem is it tried to stay there permanently! I got a little way down the road and it would no longer accelerate and every time i put it in gear it bogs down and died if i tried to push through it. Now that its home, ive done some testing and it idles great, and will rev slow, but if i hit the gas real quick at least half throttle, it hesitates real bad and backfires through the carb if i hold it. It looks like its getting plenty of gas from the pump, and the timing seems fine but i can not find a vacuum advance. It has the 4g carb with a governor. Does it have a vacuum advance? Just replaced points and condenser to eliminate a possibility. Cant find a vacuum leak anywhere and governor carb diafram seems to work. Ive stumped a few mechanics and car guys already, any ideas?
