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

Headers are in...what next?

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Old Jun 23, 2010 | 06:53 PM
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Default Headers are in...what next?

So far I have the following mods:
1. 1.6 rr
2. 160 deg Thermostat
3. Cut lid with K&N
4. TB bypass
5. LT headers
6. EGR/AIR/Cat delete

What I want is more SOTP difference in acceleration. However, I want to keep the stock rear end ratio. What do you guys recommend?

check it out on youtube
http://www.youtube.com/watch?v=EAVX0yVLlBo

Last edited by rogerdoger1993; Jun 23, 2010 at 11:48 PM. Reason: More info
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Old Jun 23, 2010 | 06:58 PM
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For SOTP feel the rear end it the thing that will get you there , If you have an automatic a higher stall converter also helps..Other then those 2 things , not much else without going into the motor...WW

PS...Theres always NOS.......WW
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Old Jun 23, 2010 | 07:14 PM
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Exhaust and then supercharger (or nitrous if you want to pay less up front and more in the long run)
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Old Jun 23, 2010 | 07:14 PM
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Well I was thinking of doing one of the following:

1. LT4 Hotcam
2. PCM for less tune
3. or an X-pipe instead of resonator

BTW here is a picture of my exhaust work!

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Old Jun 23, 2010 | 07:20 PM
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Nice looking job on the pipes.. The hotcam will work well, porting the intake or going to highflow intake will help, though the tune is a good idea, I would save that until your done with the rest of your changes so you only have to do it once..WW

Last edited by WW7; Jun 23, 2010 at 07:24 PM.
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Old Jun 23, 2010 | 07:40 PM
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All the things you said will help but the only way to come off the line hard and fast is to change the gears. You would be shocked at the difference between 2.59 to 3.07 and 3.73. It is the only way to get off the line.. and honestly it does not cost a whole lot.
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Old Jun 23, 2010 | 07:41 PM
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Very nice job on the headers and exhaust
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Old Jun 23, 2010 | 07:43 PM
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Originally Posted by hooked073
Very nice job on the headers and exhaust
Thanks man. I put the headers in myself. But a had a heck of a time trying to find an exhaust shop that was willing to work around the CAT's.

Last edited by rogerdoger1993; Jun 23, 2010 at 07:46 PM. Reason: grammar
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Old Jun 23, 2010 | 07:49 PM
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Default Check out my exhaust

I bought the headers used from another forum member. And the install went almost flawless. Unfortunately I had to chase down a header gasket leak. But with that squared away I can tear it up at Bloomington Gold this weekend.


Last edited by rogerdoger1993; Jun 23, 2010 at 07:52 PM. Reason: wrong pictures
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Old Jun 23, 2010 | 07:57 PM
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What kind of headers did you install? Cats or no cats?
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Old Jun 23, 2010 | 08:01 PM
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I used TPIS headers. As for the cat's I rather not say.
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Old Jun 23, 2010 | 09:03 PM
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mm by what some people dont say tells a lot I wonder if there is anything in them there cats LOL LOL
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Old Jun 23, 2010 | 09:11 PM
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How much does it cost to put in headers and an h pipe with muffler and cat delete
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Old Jun 23, 2010 | 09:25 PM
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My set up came to the following grand total.

Headers $360
Gaskets $22
EGR/AIR delete plates $15
Exhaust parts and labor $275

Grand total $672

The real question is. Was it worth it? And the answer is maybe. That is because I felt hardly any SOTP difference. This is mainly because I didn't tune for the lack of air/egr plumbing. However, the throaty rumble when you open it up makes it all worth while.
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Old Jun 23, 2010 | 09:27 PM
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Originally Posted by 1986 4+3 CORVETTE
How much does it cost to put in headers and an h pipe with muffler and cat delete
Im not sure I will be going the h-pipe route. However, an x-pipe and a set of Corsa mufflers is on the not too distant horizon.
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Old Jun 23, 2010 | 09:35 PM
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roger I know you dont want to but change the gears then you notice the difference
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Old Jun 23, 2010 | 10:59 PM
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Originally Posted by hooked073
roger I know you dont want to but change the gears then you notice the difference
But I am wondering how much gearing I should change. Because at the moment I kinda like the highway driveability.
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Old Jun 23, 2010 | 11:05 PM
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do you know what gears you have now?
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Old Jun 23, 2010 | 11:16 PM
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How much would it be for a shop to do it, just the labor cost
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Old Jun 23, 2010 | 11:19 PM
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Originally Posted by hooked073
do you know what gears you have now?
Hold on let me go outside and check real quick.
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