Ok..which is quieter...a magnaflow or flowmaster american thunder 3" for the LT1...i need something really quiet..its for a 383 with a very big cam..and long tubes..i plan on putting a 24" bullet right b4 the axle..(weld it in place of part of the pipe and put a cutout right after it) this way i can make my dad happy when i go home in the summer. I had a loudmouth last year with manifolds..and im looking for a 3" system that would be ALOT quieter than the old loudmouth..any normal day the cutout will be open flowing through the 24" bullet....anyone?also im lookin for something kinda of cheap since i really wont be using it..i want another borla but..WAY to much money now.-Mark

 

Magnaflow...

...and search is your friends

 

Mangnaflow much quiter. Had the American Thunder for 3 Years prior. Go figure cause the Magnaflow is totally straight thru design..........

 

ill trade you my new 3 inch flowmaster catback. dual outlet for what ever you have ..