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So if 1 7/8" is overkill what will 2" do...

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Old Jun 8, 2006 | 12:21 PM
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Default So if 1 7/8" is overkill what will 2" do...

I needed some headers for my ChevyII/6.0L conversion.
After seeing how much clearance I had headers looked doubtful.
I then ran across some Hooker Super Comp Big Block Fender Exit Headers.
I believe I can make these work by changing the flange.
Great headers that will fit for under $500.

Problem is the big block super comps are 2" od with a 3 1/2" Collector.

My stock bottom end 6.0L when finished would be pushing probably 475fwhp at best.

Are these headers going to completely kill any hope of low end torque?

Setup:
03 Stock 6.0L Short Block
Patriot LS6 59cc Heads
LS6 intake
Cam (unknown) (probably something close to a TSP Torquer 2)
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Old Jun 8, 2006 | 12:41 PM
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Yes! It'll probably feel like a turd!
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Old Jun 8, 2006 | 04:13 PM
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Only one way to find out... try it. I don't personally know of anyone that has put that big a primary on an gen3 or 4 engine, but that doesn'e mean it won't work, they may have not doen it because of clearance issues. I'd guess, taht if you were running a 400+ ci setup, that it would be fine, as that's what those headers are made for in the first place, old shcool big block. I'd try it before just x'ign off a header with that size primary because noone has tried it.

Friend of mine is runnign full 1 7/8 on a 383, what you're talking about isn't that much bigger, and you're displacment isn't that much different.
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Old Jun 8, 2006 | 06:06 PM
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I just installed 1 7/8" Kook's LT'S on my 383 and it seems to have helped not hindered the performance of my car.
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Old Jun 8, 2006 | 07:05 PM
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Well I plan to try it and if it doesn't work out I can always have some 1 3/4" headers custom made.
Just got the headers off ebay should be here next week.
Should look pretty crazy Gen 3 motor with old school fender exit headers.
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Old Jun 8, 2006 | 07:26 PM
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I have Edelbrock stepped 1 3/4 to 1 7/8 headers coming....stock LS1 346CI...are these too damn big????...for torque ?
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Old Jun 8, 2006 | 07:44 PM
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Originally Posted by NHRAMAN
I have Edelbrock stepped 1 3/4 to 1 7/8 headers coming....stock LS1 346CI...are these too damn big????...for torque ?
i have kook 1 7/8 on my 346 t rex cam only motor and made 10 across the board over the 1 3/4
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Old Jun 8, 2006 | 07:45 PM
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Originally Posted by Redneck Z
Yes! It'll probably feel like a turd!
i think you're confusing torque with backpressure. it'll FEEL like it has less torque but it'll actually have more. you'll just have less backpressure so it doesn't feel like a wall is pushing you. you're going faster but can't tell. you pick up torque running open headers last time i checked. it's all in the scavenging with headers as far as i know. don't quote me on this but i think you'd gain torque with the bigger header. with any exhaust setup, bigger is usually better.
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Old Jun 8, 2006 | 07:49 PM
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Originally Posted by 6secNaLs1
i have kook 1 7/8 on my 346 t rex cam only motor and made 10 across the board over the 1 3/4
EXCELLENT......That is certainly good to hear...
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Old Jun 8, 2006 | 07:57 PM
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You're going to love the way those Edelbrock headers fit and perform.
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Old Jun 8, 2006 | 08:01 PM
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Originally Posted by ChocoTaco369
i think you're confusing torque with backpressure. it'll FEEL like it has less torque but it'll actually have more. you'll just have less backpressure so it doesn't feel like a wall is pushing you. you're going faster but can't tell. you pick up torque running open headers last time i checked. it's all in the scavenging with headers as far as i know. don't quote me on this but i think you'd gain torque with the bigger header. with any exhaust setup, bigger is usually better.
it will have more, that is true. but not down low.

Taking off the exhaust and running open headers on your avg. cam only car will shift the power band to the right and you get more power up top. That's why it feels slower, b.c. you're losing it on the low end.

Last edited by 99FormulaM6; Jun 8, 2006 at 08:01 PM. Reason: spelling/punctuation
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Old Jun 8, 2006 | 08:58 PM
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Originally Posted by Asmodeus
You're going to love the way those Edelbrock headers fit and perform.
YEAH.......if I ever get them....been only 12 or 13 business days though.......seems like forever.......cannot wait.....
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