Recommended Exhaust for Vortec 454??

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udownwitkj

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Just picked up a 1997 Suburban 2500. I will be using it to tow a trailer full of ATV's and also my two b-bodies to out of town shows, one at a time of course. Like most people, i like to mod my vehicles. Im looking for opinions on an exhaust setup. one muffler, dual mufflers, 3 or 3.5" pipe, X-pipe... Im just getting into the research phase and have not seen much so far. Will modding exhaust help or hurt fuel economy? doesn't matter but if it helped, that would be a plus.

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RatPwrd72

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Following along to see what everyone recommends. I've got a 96 dually with the stock exhaust on it and need to do the same. Not looking for loud at all, just a little more than stock and maybe some power improvements. I've looked at the Gibson cat back with mixed reviews.
 

4L80

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I put the Gibson catback single pipe on my 93 K2500 reg cab 5.7 about 4 years ago. Nice gentle rumble, easy install, but at the time, I believe they were made for a K1500, so I had to get the muffler shop to put a little extra bend in a short piece of midpipe. Another positive is it's all stainless so hopefully it never has to be done again from the cat back.
 

mutanay

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Before i went to straight pipes, i had a Flowmaster 40 dual muffler. It had one of the nicest tones for the ear. It is not obnoxiously loud like straight pipes and it is a trusted brand in my opinion. If you want the nicest tone get a flowmaster
 

michael hurd

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With an 80% VE, 454 cubic inches, and a power peak at 5000 RPM, you would require a combined flow of about 525 CFM through your exhaust. You can use a single muffler if it exceeds that flow requirement, or if duals, combined 525+CFM if you want low restriction.

Single 2 3/4 to 3" would be sufficient, or dual 2 1/2" would flow more than a single 2 3/4 or 3".
 
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Just picked up a 1997 Suburban 2500. I will be using it to tow a trailer full of ATV's and also my two b-bodies to out of town shows, one at a time of course. Like most people, i like to mod my vehicles. Im looking for opinions on an exhaust setup. one muffler, dual mufflers, 3 or 3.5" pipe, X-pipe... Im just getting into the research phase and have not seen much so far. Will modding exhaust help or hurt fuel economy? doesn't matter but if it helped, that would be a plus.

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Hi there I see you and others on here are looking for exhaust system for k2500 suburban with a 7.4L in it. I did an extensive search and found a place on line called parts geek which carries the stock muffler for $91.00 and will be buying it for my father's 1998 Chevy suburban k2500 7.4L . Once I get it I will let you know how it fits. But try parts geek they have a selection of factory style exhaust systems. I hope this was helpful to everyone as I myself have scouward the internet for the last week to get this far.
 

Jorge6.5

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Stock exhaust is a joke. Do dual 2.5" after the Factory down pipes, go into a single straight through muffler,
Preferably with an internal crossover, to dual 2.5" tail pipes. Out the back or behind the tires.
 

karl02

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I also have a Gibson catback that I got from 4wheelonline. It has a deep sound that is slightly loud.
 
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