Dynomax Super Turbos Suck

63Belvedere said
What part # are those mufflers?? I am running 2 1/2" Dynomax Ultra Flow part #17285 and not sure on flow but they got a bad drone at about 2000 rpm so I am looking to change them.

I don't know the number but they are offset in / center out with a 14" long body and 19" long overall.

As for the drone do you have an h or x pipe? If you have vacuum advance disconnect it and plug the hose and see if the drone goes away.