I wanted to go all original so I can use my original air breather and the glass fuel bowl that sits right in your way when your adjusting air fuel mixture screws on carb. Had an eldelbrock on there and never had problems. Smh, Any ideas on what I should do? Its original 340 hp 409, intake and exhaust manifolds. Just want to cruise it and hear that 409 purr once in a while. Just seems like it went downhill after i installed original rochester carb, IDK.