C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

exhaust system size.

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Old Sep 21, 2004 | 12:03 AM
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Default exhaust system size.

Hello

Im going to use hooker headers, hooker front y-pipe, a strait pipe instead of the cat, then the stock rear y-pipe and finnish it off with some kind of preformance muffler ( havent decide what brand yet ).
But I start thinking that perhaps its not enough? And that I need to use dual 3 inch all the way? Se sign for my mods.

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Old Sep 21, 2004 | 12:14 AM
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http://www.prestage.com/community/Te...s/default.aspx

that helped me decide on putting dual 2.5" on mine
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Old Sep 21, 2004 | 12:24 AM
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Since your headers terminate in 3" collectors it would be easiest to just go with 3" true duals, if you can find 3" input mufflers.
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Old Sep 21, 2004 | 01:52 AM
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Originally Posted by 65Z01
Since your headers terminate in 3" collectors it would be easiest to just go with 3" true duals, if you can find 3" input mufflers.
Hmm I dont know about "easiest", as that would force me to make a "new" dual exhaust. Instead of "just" using the hooker y pipe..
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Old Sep 21, 2004 | 07:33 AM
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Well, a true dual exhaust would consist of separate pipes from each collector through the mufflers, right.

If you just want to use a Y-pipe setup, then for sure use 3" pipes.

You have an L98 right??
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Old Sep 21, 2004 | 07:47 AM
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Default Two Y-pipes?

You sort of defeat the idea of duels by going from headers into a Y pipe
then a straight pipe, then another Y pipe. Go from your headers to your pre-cats and straight through to the mufflers. 2 3/4" should do it.
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Old Sep 21, 2004 | 08:02 AM
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Originally Posted by 65Z01
Well, a true dual exhaust would consist of separate pipes from each collector through the mufflers, right.

If you just want to use a Y-pipe setup, then for sure use 3" pipes.

You have an L98 right??
I dont really have a l98 as you can se in my sign. Not much is left from my old TPI setup.
What I mean about the front y-pipe is that im NOT using the stock y-pipe but the HOOKER 3inch ypipe that fit to my hooker super comps.
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Old Sep 21, 2004 | 08:16 AM
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I started out the route of Hooker headers and Y pipe. The Hooker Y pipe is garbage. I and other member have had problems. The headers are nice.

My current setup is Hooker headers, true 3 inch dual exhaust, Dr. Gas X pipe, Randon metallic bullet cats, and Power Effects adjustable mufflers. It is expensive, but ready to meet the my growing HP needs. In the long run, I would have save money by doing it right in the first place.
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Old Sep 21, 2004 | 08:40 AM
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Carl90, your setup is sort of what I had in mind...true duals without the Hooker front Y.

If I'm building a moderate to high HP motor that's the setup to go with.
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Old Sep 21, 2004 | 08:56 AM
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Originally Posted by Carl90
I started out the route of Hooker headers and Y pipe. The Hooker Y pipe is garbage. I and other member have had problems. The headers are nice.

My current setup is Hooker headers, true 3 inch dual exhaust, Dr. Gas X pipe, Randon metallic bullet cats, and Power Effects adjustable mufflers. It is expensive, but ready to meet the my growing HP needs. In the long run, I would have save money by doing it right in the first place.
nice
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Old Sep 21, 2004 | 01:13 PM
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65Z01

The Random metalic cats are small enough (3.5 inch diameter) that you have tons of flexability on where to locate them.

Also, I had an exhaust pipe bung installed for a wide-band O2 sensor, which is on order. This is the way to go, if you are optimizing your PROM fuel tables.

One other comment...use stainless steel collector bolts. I never did so much swearing in my life when I had to hack saw of the rusted bolts after 3 years of the headers being in place.
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