ATR pitbull muffler question

[jason]

Finally posting after registering almost a year ago.  Finally transitioning from tbs.com.

Did ATR manufacture application-specific mufflers ? 

I have the 4 stainless mufflers from my old impala SS quad muffler system.  The ones on my Turbo Regal are the aluminized steel ones and have seen better days.  If the mufflers weren't specifically designed to cancel out a specific frequency I was considering using the 2 centre ones.  They seem to be roughly the same dimensions as the Turbo regal ones.

[SuperSix]

The real experts will chime in, but Using a non-turbo muffler can affect performance. By how much? I don't know.

[Scoobum]

For our cars...stick with a straight through design...like Magnaflows or Ultraflows.

[jason]

They are straight through mufflers.  I was wondering if ATR used the same muffler p/n on the Impala SS and the Turbo Regal, or did they used different one to tweak the sound for each car ?  The exhaust pictured is an ATR quad muffler system I had on my Roadmaster.

[Steve Wood]

If I had any money to bet, I would guess there is no difference in design for a given car....our cars droned so bad with the old "turbo" mufflers, that it was probably a selling point to get people to buy them.

[gbsean]

according to my ATR book the Impala SS mufflers flow within 99.99 of a straight pipe. I do not see a part# for the mufflers as the sold complete sets I would assume they used the same mufflers on all their systems...

[Top Speed]

I doubt they were that sophisticated.  The best way would be to compare the outside dimensions.

[gbsean]

here are pics

[1KWIKSIX]

I doubt they were that sophisticated.  The best way would be to compare the outside dimensions.

 
They look like they are  very similar mufflers, but maybe a bit longer?
I'd be inclined to install them and see.
 
Here's some pics to compare them to.
 
 
 

[jason]

Thanks for the info.  They look identical to the ones posted by 1kwiksix.  I'll give them a try.  Sean, I hope you don't mind, but I saved the photo of the Impala SS system and will post them on the ISSF.

[gbsean]

not a problem  ATR is out of buisness....lo l