Upgrading exhaust,headers,etc!! Any advice
Thread Starter
Heel & Toe
Joined: Jun 2014
Posts: 22
Likes: 1
From: Hidalgo Texas
Upgrading exhaust,headers,etc!! Any advice
I have a 1991 L98 vette and i want to upgrade whole exhaust system including headers...i dont want my vette to be extremely loud but just to have a nice mild deep sound...any tips on what & what not to do??...all advice is appreciated!! 👍
Thread Starter
Heel & Toe
Joined: Jun 2014
Posts: 22
Likes: 1
From: Hidalgo Texas
Yeah i have some flowmasters but havent installed them yet....but i dont know what headers to install long tube or shortys and what diameter size,x pipe,h pipe,straight pipe,cats or no cats
Advanced
Joined: Feb 2014
Posts: 93
Likes: 36
From: St Charles Illinois
I have some Exotic Muscle Headers for sale that are for the Lt1 and L98. They are 1 3/4 steel but coated inside and out with 2.5 inch extensions NO CATS. These headers were used 1 year and never in the rain or snow. No rust on them either. Would like 600. As for mufflers? Magnaflow or Corsa are probably what you want if your looking for semi quiet at idle but nice sound at WOT.
Burning Brakes
Joined: Oct 2010
Posts: 1,037
Likes: 28
From: Montclair New Jersey
headers
[QUOTE=XLR8 C4;1588904825]I have some Exotic Muscle Headers for sale that are for the Lt1 and L98. They are 1 3/4 steel but coated inside and out with 2.5 inch extensions NO CATS. These headers were used 1 year and never in the rain or snow. No rust on them either. Would like 600. As for mufflers? Magnaflow or Corsa are probably what you want if your looking for semi quiet at idle but nice sound at WOT.[/QUOTE
Do the headers have the EGR hook up or is it deleted?
thanks
Do the headers have the EGR hook up or is it deleted?
thanks
Tech Contributor
Joined: Oct 2011
Posts: 525
Likes: 9
From: Annapolis MD
I did what you are asking for on my 1992 LT1 about 2 years ago.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Tech Contributor
Joined: Oct 2011
Posts: 525
Likes: 9
From: Annapolis MD
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Advanced
Joined: Feb 2014
Posts: 93
Likes: 36
From: St Charles Illinois
[QUOTE=rrt898;1588915449]
Nope. No emissions.
I have some Exotic Muscle Headers for sale that are for the Lt1 and L98. They are 1 3/4 steel but coated inside and out with 2.5 inch extensions NO CATS. These headers were used 1 year and never in the rain or snow. No rust on them either. Would like 600. As for mufflers? Magnaflow or Corsa are probably what you want if your looking for semi quiet at idle but nice sound at WOT.[/QUOTE
Do the headers have the EGR hook up or is it deleted?
thanks
Do the headers have the EGR hook up or is it deleted?
thanks
Little to no drone.
Race Director
Joined: Oct 2011
Posts: 16,093
Likes: 820
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
I did what you are asking for on my 1992 LT1 about 2 years ago.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Tech Contributor
Joined: Oct 2011
Posts: 525
Likes: 9
From: Annapolis MD
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Exhaust systems are really a personal preference kind of thing. They're all going to give you similar gains, but vastly different sounds. On my car currently I have Hooker long tubes, 2.5 SS exhaust with an X-pipe and Corsa mufflers (no cats). I'm very happy with the system. It sounds great and there is zero resonance.
Previously I had the same system, except with Flowmaster 40 series mufflers. With the Flows the car sounded wicked from the outside, but it would rattle your teeth while driving from the resonance. It was so bad, it got to the point where I didn't even want to drive it.
Here's a couple videos I made. The only change between the two is the mufflers. Flowmasters in the first and Corsa in the second.
Previously I had the same system, except with Flowmaster 40 series mufflers. With the Flows the car sounded wicked from the outside, but it would rattle your teeth while driving from the resonance. It was so bad, it got to the point where I didn't even want to drive it.
Here's a couple videos I made. The only change between the two is the mufflers. Flowmasters in the first and Corsa in the second.
Thread Starter
Heel & Toe
Joined: Jun 2014
Posts: 22
Likes: 1
From: Hidalgo Texas
I did what you are asking for on my 1992 LT1 about 2 years ago.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Stainless Works long tube headers (JetHot coated), cat delete, x-pipe, 2.5" pipes, chambered SW mufflers, polished stainless tips.
I ordered mine with the AIR fittings, but decided to cap them when I deleted the cats (not required for a 'Historic' auto).
More mellow than stock but not loud and no drone.
Thread Starter
Heel & Toe
Joined: Jun 2014
Posts: 22
Likes: 1
From: Hidalgo Texas
Exhaust systems are really a personal preference kind of thing. They're all going to give you similar gains, but vastly different sounds. On my car currently I have Hooker long tubes, 2.5 SS exhaust with an X-pipe and Corsa mufflers (no cats). I'm very happy with the system. It sounds great and there is zero resonance.
Previously I had the same system, except with Flowmaster 40 series mufflers. With the Flows the car sounded wicked from the outside, but it would rattle your teeth while driving from the resonance. It was so bad, it got to the point where I didn't even want to drive it.
Here's a couple videos I made. The only change between the two is the mufflers. Flowmasters in the first and Corsa in the second.
Previously I had the same system, except with Flowmaster 40 series mufflers. With the Flows the car sounded wicked from the outside, but it would rattle your teeth while driving from the resonance. It was so bad, it got to the point where I didn't even want to drive it.
Here's a couple videos I made. The only change between the two is the mufflers. Flowmasters in the first and Corsa in the second.
Tech Contributor
Joined: Oct 2011
Posts: 525
Likes: 9
From: Annapolis MD
No ground clearance issues for me, as you can see in the photos.
Pro
Joined: Mar 2013
Posts: 698
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From: Huntington WV
Race Director
Joined: Oct 2011
Posts: 16,093
Likes: 820
From: Dallas Texas
2025 C4 of the Year Finalist - Modified
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
Props to you!! Nice vette and yeah the flowmasters i think were to much imo!...the corsa sounds more crisp & and clear!!...and when you remove the cats what does it do sound wise??...or whats the reason you removed them if you dont mind me asking...ive read a lot of ppl take off the cats etc etc
I never had cats on any of my more free flowing systems so I can't speak for their effect on sound with headers, X-pipes, etc.