I will be getting a flowmaster muffler after I install my new engine. I am just wondering what the stock inlet and outlet is on an 83 trans am. I don't know if my muffler is stock right now, but it has one inlet and 2 outlets. Can anyone help? Thanks!

Steve

 

I'm not completely sure of the answer, because my stock system was smashed and bent in the donor car, I had a TPI-take-off system to put on, and just dumped the original.

I have to ask, though: Why do you care? You really don't want that system with your new engine (or your current one, for that matter), so get rid of all LG4-smelling stuff. Get '86-'90 TPI single-cat application exhaust components, and your engine will finally be able to breathe. You'll have 3" cat, I-pipe, muffler inlet; and 2-1/2" dual outlets if you go with the "typical" system available.

 

Also have to ask:

"Small tube Dynomax Headers" - why do you want them? Again, get the right parts so your engine can perform up to its potential.