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post #1 of 8 (permalink) Old 08-06-2009, 04:34 AM Thread Starter
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Thunderbird Headers

is there anywhere i can get direct fit headers from for a 4.6 bird?? ive been thinking about that for my next engine mod, but im having a hard time finding a set.
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post #2 of 8 (permalink) Old 08-06-2009, 05:23 AM
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Don't be tempted to buy those $75 JBA shorty headers. They crack. The only real option is Kooks mid length headers. Be ready to spend 6-8 c-notes.
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post #3 of 8 (permalink) Old 08-06-2009, 10:20 AM
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Sorry to hijack, but how crap are the JBA's? I aquired a set a little while back with some PI swap parts and was going to throw them on just for whatever minimal gains I might get, but Im not so tempted if they are liable to crack on me down the road.

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post #4 of 8 (permalink) Old 08-06-2009, 11:03 AM
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What are the gains for the headers??

How much does it improve sound??

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post #5 of 8 (permalink) Old 08-06-2009, 11:27 AM
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Get with Tbirdbrain. at braincoating.com He sells ported and coated stock headers that work very well and are a great, reasonably priced alternative to the much more expensive KOOKS.

There's no beating mid-length headers for flow or sound. But, as discussed above, it comes at a price. And to answer the next most likely question, No, you can't just get Mustang headers because the steering shaft to the Rack & Pinion configuration is different for a Thunderbird and Mustang headers are a different configuration.

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post #6 of 8 (permalink) Old 08-06-2009, 11:32 AM
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Quote:
Originally Posted by 96tbirdboi View Post
What are the gains for the headers??

How much does it improve sound??
You should experience significant gains with the Kooks headers.

Anyone think getting the shorties I have ceramic coated would be worth it? Would it help keep them from cracking?

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post #7 of 8 (permalink) Old 08-06-2009, 12:38 PM
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The JBA/SS Autochrome headers have been reported to flow worse than stock manifolds.

I certainly wouldn't risk spending the money to have them ceramic coated only to see them crack anyway.
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post #8 of 8 (permalink) Old 08-06-2009, 12:52 PM
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Originally Posted by tinman_72 View Post
The JBA/SS Autochrome headers have been reported to flow worse than stock manifolds.

I certainly wouldn't risk spending the money to have them ceramic coated only to see them crack anyway.
Really? See thats the first time Ive heard it go that way, from what I understood they have minimal gains over stock manifolds, about the same as ported manifolds.

I wouldnt doubt it though as I have never seen any proof on the subject, and havent looked into it far enough to know for sure.

Well that kinda stinks then I guess, might have to try and sell some stuff and get some Kooks.

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