So now that my car is complete I have taken it to an engine tuner. You cant believe how hard it is to find someone that can actually tune a car with a carburetor and distributor. Besides the tune they are going to dyno the engine. My question and concern is this. My coded 708271 carb they say has a leak, they were going to repair it but they said that from a performance point of view it is too small for the motor. The motor is the correct 1968 400 HO motor. I thought the carb was 800CFM. Their plan is to put an edelbrock 650 on there. I do want car to run optimal but are these people correct? I know that many people refer to these carbs a Junk, but these tuners are telling me that true 800 cfm carbs are on 600-700 HP race motors and this carb is not that big?

Do I listen because they are correct or do I grab my car and run?