Difference Between Various Flowmasters?

[ACSPONY]

What's the main difference between the 40,50,delta series, or american thunder?
Do they get progressively louder? quieter?
Thanks,

~A.C.

 

[daver01]

30's are one chamber, 40's are the originals (2 chamber), 50's are the quieter version of the 40's(still 2 chamber i believe), & 60's are for the ricers.

any series followed by delta is supposed to have less interior resonance aka drone.

this is just my 2 pennies, more than u care to read about em @

http://www.flowmastermufflers.com/cgi-bin/flowmaster/mufflers.html?id=WZ8C2E2y

 

[ACSPONY]

Thanks, the original 40s look good to me, eff delta flow, I want it loud

 

[nhra427]

I just welded in a set of stainless 2 1/2" delta flows. They arent quiet at all and have drone. They were alot louder then stock. idling they sound like stock but as soon as i hit the gas they get loud. I was going to put in a o/r H pipe but i dont think so now.

 

[Darkhorse845]

The original 40's sound the best.