3" intermediate with a dynamax bullet
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
3" intermediate with a dynamax bullet
who's done it? I'm thinking of buying a 3" intermediate pipe, running it through a single 3" dynamax bullet muffler and tucking the tailpipe up high on the driver side where it won't be noticable.
Option 2 is to run the bullet muffler closer to the front (similiar to a loudmouth), and split to dual tail pipes.
Option 3 is just to buy a 3" catback.
I don't know what option I want yet. Option 1 would be the cheapest, and can be a complete DIY install. All I'd have to do is tack a hanger on the tailpipe. Option 2 would be the coolest, but not something I could do myself. The expense would probably push me over option 3 which would be just as good for all intents and purposes.
Right now I've got a 2.5" dynamax catback and not only is the car way too quiet, I'm sure the tiny exhaust isn't helping my performance any.
Any opinions? Anybody running a single 3" bullet muffler?
Option 2 is to run the bullet muffler closer to the front (similiar to a loudmouth), and split to dual tail pipes.
Option 3 is just to buy a 3" catback.
I don't know what option I want yet. Option 1 would be the cheapest, and can be a complete DIY install. All I'd have to do is tack a hanger on the tailpipe. Option 2 would be the coolest, but not something I could do myself. The expense would probably push me over option 3 which would be just as good for all intents and purposes.
Right now I've got a 2.5" dynamax catback and not only is the car way too quiet, I'm sure the tiny exhaust isn't helping my performance any.
Any opinions? Anybody running a single 3" bullet muffler?
I'm running 3" exhaust from the headers back. I don't have a cat or anything but I have a single 3" dynomax muffler and a single tailpipe on the drivers side. Very loud and meaty sound. I can send you pictures if you want. I haven't figured out how to put them on the post yet.
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
anybody else have any ideas?
I can't possibly be the first person in the universe to dream up this type of exhaust.
I can't possibly be the first person in the universe to dream up this type of exhaust.
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Joined: Apr 2001
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From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
intermediate pipe - 44063 Front I pipe & 43248 OA I pipe
ultraflow muffler- 17227
RH tailpipe - 43243
LH tailpipe - 43244
That muffler is 3" in/ two 2.5" out and will flow 940 cfm; enough to support 427 'loss free' HP.
The 'loss free' part means that no HP will be lost because of restriction from the muffler.
Just a suggestion. Since you already have the tailpipes from your existing Dynomax, just swap them over to the new muffler.
Oh... and the muffler is ~$100 thru Summit, but there's a $25 rebate right now.
ultraflow muffler- 17227
RH tailpipe - 43243
LH tailpipe - 43244
That muffler is 3" in/ two 2.5" out and will flow 940 cfm; enough to support 427 'loss free' HP.
The 'loss free' part means that no HP will be lost because of restriction from the muffler.
Just a suggestion. Since you already have the tailpipes from your existing Dynomax, just swap them over to the new muffler.
Oh... and the muffler is ~$100 thru Summit, but there's a $25 rebate right now.
Last edited by AJ_92RS; May 28, 2003 at 12:17 AM.
Thread Starter
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Joined: Jul 1999
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Thanks for the idea. Those 2 intermediate pipes were what I was considering, but I think I'd rather use a bullet muffler. Although the flow potential doesn't matter, it's MUCH cheaper, plus will give a more agressive tone.
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Joined: Apr 2001
Posts: 4,969
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From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
Originally posted by Jim85IROC
Thanks for the idea. Those 2 intermediate pipes were what I was considering, but I think I'd rather use a bullet muffler. Although the flow potential doesn't matter, it's MUCH cheaper, plus will give a more agressive tone.
Thanks for the idea. Those 2 intermediate pipes were what I was considering, but I think I'd rather use a bullet muffler. Although the flow potential doesn't matter, it's MUCH cheaper, plus will give a more agressive tone.

Which bullet muffler where you thinking of using? I'm going to be doing a similar change soon and I'd like some ideas also.
I was also considering the 17233 Ultra Flow for the same reason as you. I want it to sound more aggressive tone, but I want it tolerable on the street. The larger chamber of the oval mufflers should do that more so than the bullet mufflers.
I don't know. I'd have to hear each one on my car to be able to tell for sure. I know Justin (can't remember his entire logon name) has the 17227 and has posted a sound clip. IMO, It sounds GOOD.
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Thread Starter
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iTrader: (2)
Joined: Jul 1999
Posts: 13,579
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
That's the problem. It's impossible to tell until you hear it. Bullets are cheap enough and there's enough people that seem to want them that if I don't like it, I can get rid of it and only lose a couple bucks. If I dump $100 on a muffler that I don't like and can't sell, I lose more money.
Plus I drive the car so infrequently that I think I can be more tolerant of the noise, especially if it sounds good.
Plus I drive the car so infrequently that I think I can be more tolerant of the noise, especially if it sounds good.
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