I have a 69 Mustang with a 302 and 351 Cleveland heads. I have a Weiand high rise manifold with 2 Holley 660cfm carbs on it. The guy I bought it from did some bracket racing. We got the car running but it is running so rich that I start to choke after about 15 seconds. My question is: The guy I bought it from also gave me an adapter to put on the high rise manifold to go from 2 carbs to 1 carb. Can I put a Holley 750cfm double pumper on it ? I already looked into changing the manifold but that is tougher to find since it is modified and it has a different cam (size unknown). I think the 2 carbs was overkill. This is my first project car so any help would be appreciated.
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