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Cam/6.0L T/A vs Bolt On 99 Cobra

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Old 05-04-2016, 11:31 AM
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Originally Posted by ZNix
I agree. There are GN's out there that look bone stock, but run into the 9s. Only a trained eye would be able to tell . Hell, they even have a class for it!
All the fast ones look stock because they are just a great looking car. No need to change anything. One of my first humbling experiences was when I got beat by GN, I had a big block Pontiac that was pretty quick, just not quick enough lol.


But back to the thread, do valve springs change the head or is it considered hardware? Honest question, no argument. Because you can buy a head with nothing on it or dressed.
Old 05-04-2016, 11:36 AM
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Originally Posted by 408-99-f
All the fast ones look stock because they are just a great looking car. No need to change anything. One of my first humbling experiences was when I got beat by GN, I had a big block Pontiac that was pretty quick, just not quick enough lol.


But back to the thread, do valve springs change the head or is it considered hardware? Honest question, no argument. Because you can buy a head with nothing on it or dressed.
Oh definitely looks wise, they don't need anything. But I meant under the hood. You can't even tell these cars are modded. Stock air box, hose, intake, up pipe, intercooler, valve covers, etc etc. They all have to look stock! Turbos usually use the stock compressor housing that has been hogged out.
Old 05-04-2016, 11:41 AM
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Originally Posted by HioSSilver

No i answered you.
Only thing you said is that you know the difference because your notch is termi swapped. Truth is that you didn't know what the 1st gear ratio was. I corrected you and you disappeared from the thread. You are only proving that you aren't man enough to admit when you are wrong.

Hammer needs to get to a 1/4 mile track to put all of the bench racing to rest.
Old 05-04-2016, 11:42 AM
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Do 1/4 mile slips not have the 1/8 on them?
Old 05-04-2016, 11:44 AM
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Originally Posted by big hammer
I only have 1/8 times so it's all we can compare
If You use the old nhra number of x1.539 bla bla bla. Your 1/8 mile car is a very impressive 1/4 mile car.
Old 05-04-2016, 11:44 AM
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Marc made a very simple statement. The Cobra in this thread has been quicker down the 1/4 than you or Jake. Which is true, no? Why try to turn it into something different?
Old 05-04-2016, 11:45 AM
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Originally Posted by handyandy496
If You use the old nhra number of x1.539 bla bla bla. Your 1/8 mile car is a very impressive 1/4 mile car.
His car seems like it lays down on the big end from the videos I've seen of it. Only way to know for sure is to go to a full 1/4 mile track.
Old 05-04-2016, 11:46 AM
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Oh well if that's all it takes to make you freak out its not my problem
Old 05-04-2016, 11:46 AM
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Originally Posted by DrLsx
You're not going to make very many LS cars "look stupid" with a lousy 114 mph car. Unless they're shitty set ups like that TA.
More than likely, his 11.7 or better 1/4 (he says it's quicker now) would probably take out about 99 out of 100 bolt-on LS 4th gens. Only because there are very few bolt-on cars like hammer's and hio's out there, compared to how many there actually are.
Old 05-04-2016, 11:52 AM
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Originally Posted by ModularMan
LOL so since factory cams are .397 lift, my gains are minimal

One other difference in the heads are the cc in the chamber. 99 cobra's are 54cc and 03/04 heads are 52cc.

99/01 cobras had 9.85 to 1 compression.
03/04 machs had 10 to 1 compression.
So you are saying you just tossed these heads on and they didn't see a machine shop for a valve job/milling? Right...........
Old 05-04-2016, 11:52 AM
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Funny. I get 11.3

Just listening to that race sounds like the 6.0 has a couple of plugged up cats on it. If it were mine I'd shoot it.
Old 05-04-2016, 11:54 AM
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Originally Posted by ZNix
I agree. There are GN's out there that look bone stock, but run into the 9s. Only a trained eye would be able to tell . Hell, they even have a class for it!
Old 05-04-2016, 11:55 AM
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Originally Posted by Jay z28
Marc made a very simple statement. The Cobra in this thread has been quicker down the 1/4 than you or Jake. Which is true, no? Why try to turn it into something different?
And yet I'd still annihilate both him and marc.
Old 05-04-2016, 11:55 AM
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The 03/04 heads are good for about 10-15whp. The 04 heads also have the 9? thread spark plug holes instead of the 5? thread and don't have the coolant flow issue the older heads did.

FWIW, I would call what modular man did no different than a ls1 car putting on 243 heads and an LS6 cam. Still factory stuff that bolts up. No big deal and not worth a ton of power on either side.
Old 05-04-2016, 11:56 AM
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Originally Posted by R6cowboy
More than likely, his 11.7 or better 1/4 (he says it's quicker now) would probably take out about 99 out of 100 bolt-on LS 4th gens. Only because there are very few bolt-on cars like hammer's and hio's out there, compared to how many there actually are.
The cobra is not bolt on. And all he said was that he would make "ls fanboys look silly".
Old 05-04-2016, 11:57 AM
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Originally Posted by V8EATR
The 03/04 heads are good for about 10-15whp. The 04 heads also have the 9? thread spark plug holes instead of the 5? thread and don't have the coolant flow issue the older heads did.

FWIW, I would call what modular man did no different than a ls1 car putting on 243 heads and an LS6 cam. Still factory stuff that bolts up. No big deal and not worth a ton of power on either side.
Looks like you're buddy marc disagrees with you.............
Old 05-04-2016, 11:57 AM
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Originally Posted by big hammer
Oh well if that's all it takes to make you freak out its not my problem
Your car laying down on the top end is something you should be worried about. If you're okay with it, then that's all that matters.
Old 05-04-2016, 11:58 AM
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Originally Posted by V8EATR
The 03/04 heads are good for about 10-15whp. The 04 heads also have the 9? thread spark plug holes instead of the 5? thread and don't have the coolant flow issue the older heads did.

FWIW, I would call what modular man did no different than a ls1 car putting on 243 heads and an LS6 cam. Still factory stuff that bolts up. No big deal and not worth a ton of power on either side.
Ls6 cam and heads would make it a h/c car. So that settles it. The cobra is a h/c/i car.
Old 05-04-2016, 11:59 AM
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Originally Posted by V8EATR
The 03/04 heads are good for about 10-15whp. The 04 heads also have the 9? thread spark plug holes instead of the 5? thread and don't have the coolant flow issue the older heads did.

FWIW, I would call what modular man did no different than a ls1 car putting on 243 heads and an LS6 cam. Still factory stuff that bolts up. No big deal and not worth a ton of power on either side.
I agree but it's not a bolt on car, like the op stated his was.
Old 05-04-2016, 12:01 PM
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Originally Posted by redbird555
I agree but it's not a bolt on car, like the op stated his was.
With that rasp high compression too.


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