Question on 1996 5.7L Exhaust

[moviewithnotitle]

So I am looking into doing some exhaust work. Currently the truck is stock (as far as I know).

My setup is a true 2" dual exhaust from the headers down until a common muffler (which is gynormous) with a single 3" outlet behind the passenger rear tire.

Is this the normal factory setup?

I would think that going dual muffler from here is easy and saves a few bucks. Granted a larger Dia would do a little better, but it's not to shabby either.

 

[blueflamed03]

IMHO, stock, that exhaust is ample. Spend that money elsewhere, have a custom tune done?

 

[nimrodcs]

stock would be manifolds to catalytic converters to dual in/single out muffler to the tip. if you have headers and no cats, someone has already altered it in some way probably. I think the rule of thumb for these trucks is to have a diameter of no more than 2.5" tubing. But I'm sure 3" wouldn't hurt. Its all about flow and timing.

Do a search on exhaust setups......there are tons of them. You'll get about 1 million ideas.

 

[blueflamed03]

I referred stock, as stock motor.
Flow is good, but too much can kill low end torque. You need some back pressure.

 

[moviewithnotitle]

Sorry, I should have been more specific.
It's dual from the headers to the Muffler. This includes dual Cat's as well.

I am going to be doing a BBTune soon, but I am going for the CAI first. As far as engine mods, this will be it. She sounds throaty already, I am just a little shocked that is was true dual all the way out to the muffler. I would have expected a more restrictive system with a single Cat, and some funky thin diameter muffler. I'll try to get some pics.

 

[blueflamed03]

no, that sounds stock, if you mean 'headers' as stock exhaust manifolds.

Keep exhaust money for CAI and tune

 

[Danny_Z56]

^ I agree,go with a nice CAI system and a tune.

I myself have always used/went with PCMforless.com for any of my GM vehicle tunes.Great bang for the buck,cheap and simple,and Bryan Herter really knows his stuff.

Their is a order form right on their website.

 

[bowtiefreak]

tune is the best bang for the buck. Exhaust just makes it sound the way you want.

 

[grimm]

Yeah, I found out a long time ago, before I became the owner of my rig that it was basically a True Dual setup from the factory, running a into a single muffler with a single outlet. I was surprised too. The factory setup is pretty much up to par. If you want a more aggressive sound you could always swap the muffler for something better or even a dual muffler/dual pipe setup. Run some decent headers, and a decent muffler, with the right size pipes, get a cold air intake and a BBtune for all of it, and your truck should be a bit more of a beast so to speak.

 

[Danny_Z56]

Grimm,how much do you know about the BBtune in order for you to recommend it? Have you owned/ran a vehicle with a BBtune? Just wondering is all...

Also i noticed in your sig that you have no mods as of yet.Also in your "planed mods" you do not mention a BBtune in your list.