PerformanceTrucks.net Forums

PerformanceTrucks.net Forums (https://www.performancetrucks.net/forums/)
-   GM Engine & Exhaust Performance (https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/)
-   -   Muffler ideas (https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/muffler-ideas-489457/)

78T/a Sep 27, 2011 11:09 PM

Muffler ideas
 
Hey guys

Im looking to do a muffler change on my 2003 4.8 ecsb. The truck is stock as of now, im going to do a few bolt on mods soon. Im guessing the stock exhaust flows enough to support a mostly stock 4.8, so i was thinking of just replacing the stock muffler, and also to save money, as most of the extra coin has to go to the my 78 Trans Am...Anyways, the truck is my DD, so im not looking for anything to intense, and plus im in and out of neighborhoods all day...Im just curious as to what everyone else is running, or suggest

I just stumbled across the dynomax vt mufflers, anybody else running these, if so how do you like them

Thanks Mike

dustinstangz Sep 27, 2011 11:20 PM

Like a flowmaster with better flow, spintech is a nice muffler and magnaflow 18" body and 22" body

silverado-lover Sep 27, 2011 11:39 PM

Spintech FTW

Lq9silverado02 Sep 28, 2011 05:52 AM

Moroso spiral flow for sure quiet idol nice n raspy when u mash it

BLACKND Sep 28, 2011 09:57 AM

Magnaflow 3" in/out race series muffler sounds great on my mostly stock 4.8.

78T/a Sep 28, 2011 04:22 PM

Yah magnaflows seem to be popular on our trucks....

I was looking more at the dynomax vt thinking id give it a shot, and im not sure i could trust the spring controlled valve inside to last as a long as a normal muffler would.Plus being in canada there is alot of expansion and contraction that would happen during the winter which may not farewell for the setup inside..

L33 - do you have any sounds clips of your magnaflow set up

and does anyone have a clip of thee spintechs

schino Sep 28, 2011 07:00 PM

heres my spintech prostreet. ive got a pair of pro shootouts going on soon though
http://youtu.be/LB2jMXY9ER8

78T/a Sep 29, 2011 10:12 PM

Yah im stuck between 3 mufflers right now, either a magnaflow, spintech, or the corsa db seem to sound real nice. Does anybody recommend a good place to but the spintechs online, ive gone to their website, i was just wondering if there was a site that may have good deals on them, because they seem to be more then the magnaflows

schino Sep 30, 2011 01:49 PM

Its prob best to just call them and order. one time I ordered through someone else and it was a pita and they ended up just drop shipping anyway.

78T/a Oct 11, 2011 03:12 PM

So i have decided to go with spintech, im not sure what series yet but it seems they have a muffler for every volume level which is nice...Anyways my truck is a stock 4.8 DD...Would running the stock exhuast with a spintech in place of the stock muffler be adequate flow, or is the stock exhaust a restriction as it is.....The truck will eventually get a tune, and some e-fans, and maybe a vette servo. Im just wondering because if more power can be had by doing duals then maybe i will wait and go that route ...?


All times are GMT -5. The time now is 09:31 AM.


© 2026 MH Sub I, LLC dba Internet Brands