Does anyone know of a good aftermarket muffler for a 90.5 Allante?

 

ring on Fox .. look what she ahs done on hers.
https://www.cadillacforum.com/m_11819/tm.htm

i have also used Borla for really deep sound .. not very Cadillac like, but there you have it.

 

quote foxpaws

Ajax,

Custom exhausts really don't cost that much more than an 'out of the box' solution - and if you find a good exhaust shop, they can tune the exhaust to how you want it to sound...

This is mine https://www.cadillacforum.com/m_11819/tm.htm

And how it sounds (it sort of overwhelmed my computer's microphone)
http://download-v5.streamload.com/13...r/allante3.mp3

I wanted something very throaty at the low end - but at highway speeds it flattens out, I didn't want to listen to a lot of drone when I have the top down for long trips.

Good luck - I am sure you can find something that works for you.

 

If you are willing to cut another outlet in the bumper, use an exhaust from a last generation Z28 or Trans Am

 

there is even a procedure to do the cutting and an insert to make it look OEM.

 

sajobob - I would look at the TransAm/Z28 exhaust - mine is pretty much for a northstar - I doubt if the configuration would work for your header set up -

But, if you need to know... Dynatech PowerCat Catalytic Converter part no. 79-400300 and an Edelbrock Stainless Steel 304 SDT muffler - part no. 55754