Well you should only have i think 3 that may hook up to the carb. You vaccum advance should hook to the single one in the front of the carb. Then your pcv onto the large port on the side of your carb. Your brake booster you can hook to your intake like factory or the back of the carb there is a large port for that. The what ever you do there you should just make sure you plug the other open ones on both the intake and carb. Hope this helps some.guitardave208 said:I recently put a edelbrock 4 barrel carb and intake on my 351M/400. I am having
trouble figuring out where the all the vaccum lines go that would help.