What muffler should I go with?

[Damian Seebold]

I have a 96 C2500 with a 7.4l. All stock 35k miles. What muffler should I choose to go with? I am looking to have a nice n loud sound, with plenty of raunchy to it.. This would be the first upgrade I would have done to it. Also I believe the inlet is dual in and single out, but I don't know what size. What would you recommend?

 

[Nad_Yvalhosert]

I've been using Gibson now, 3 trucks in a row. Awesome flow, barely noticable at idle, great tone at 3500 rpms.
Single in dual out on my TBI 5.7
Dual in, single out on my 5.7 Vortec Suburban
Dual in, dual out on my 5.7 Vortec Denali

 

[Nad_Yvalhosert]

However, if you want loud and nasty, get a single chamber muffler. Similar to a Flowmaster Super 10. But NOT a Flowmaster Super 10.
I tried a pair of stainless single chamber mufflers from Amazon, company called Totalflow. Welded them, and stainless Y, to the OE muffler inlet pipe assy, and the OE tailpipe, back into my Denali. (Because the Denali/Escalade has the ground effects cutout, and the unique oval tip)
Holy shat, what an incredible sound. Puts my Gibson to shame with an aggressive exhaust note.
My vote from now on is a pair of single chambers and the OE tailpipe.

 

[Nad_Yvalhosert]

By the way, the OE tail pipe is 2 3/4" diameter.

 

[F4U-1A]

I thought about a Flowmaster Catback, but my OEM still looks brand new. Besides, my wife is now on early shifts and my dog and I still like to sleep in.

 

[PlayingWithTBI]

I like my 3" in/out Borla Pro XS (IIRC). I gained a few ponies (with my calibrated butt dyno) over a 3 chamber with it too.

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[VIKING_MECHANIC]

I second the Borla Pro XS. My brother has a 87' RAM Charger with dual Borals, and let me tell you, its sounds niiiicccee. It's loud and has a deep tone, but not overdone like some Flowmasters are. You can hear it at idle and at mild RPMs, it turns heads. Granted he has a 318 in it, so yours may sound different.

On my C1500, I have Thrush welded muffler. It sounds good, but it's not really that loud(for me), but it's definitely not quite. I'd say it's a step above a stock muffler.

 

[Schurkey]

Perhaps a moderator will move this to the Exhaust sub-section.

Exhaust

Anything exhaust - from headers cats and pipes to tips.

www.gmt400.com

 

[96TahoeDoug]

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3" from cats back straight dump pipe sounds better than any muffler I tried - totally quiet until half throttle then braps out nice. Pops just right decelerating..