Swanger Exhaust

[RustyK5]

I am a diesel newbie, and have been exploring the DieselPage's excellent content. The "Swanger exhaust modification" has been mentioned many times and I have even seen a picture of it on the performace 6.2 rebuild article. I would like to know more about it. If there is an article already posted somewhere please just point me towards it. Thanks in advance for your help :D

[CleviteKid]

Hi Rusty,

Welcome to TheDieselPage and to the Forums. There is no separate article about the exhaust, but I do have a dimensioned sketch of the adapters that you can use to make a pair, or take to a machine shop to get some made for you.

The adapters accept a standard 2-1/2" three-bolt flange with 2-1/2" pipes. Mine connect immediately to a pair of tapered 2-1/2" to 3" adapter pipes, and then I have a complete 3" dual exhaust, with a 3" crossover pipe ahead of the pair of 3" DynoMax SuperTurbo mufflers. When I drive the through a parking garage here in Miami, it sets off at least half-a-dozen car alarms from the sound pressure alone. :D

If you send an email to me at
clevitekid "at" yahoo "dot" com
I would be happy to email back the dimensioned sketch for the adapters that go on the outlet end of the exhaust manifolds for the 82-87 trucks. This offer applies to anyone who wants the sketch, not just Rusty (is that the name of your truck, or do you have red hair, or both?)

Dr. Lee :cool:

[RustyK5]

Thanks for the info! I've enjoyed all the articles you've written. I was wondering how you got to a 3" exhaust with the stock manifolds! Thanks for setting me straight. ;)
My truck is rusty, very rusty! My hair is only red after I have been working on my blazer, and thats from the rust that has fallen off the K5. :D
I am fixing the "leaks" that caused all the rust in the first place, and replacing floors etc. Exhaust will be next, and I'd like to have all my ducks in a row! Thanks again. Andy