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Old Mar 3, 2010 | 05:14 AM
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351 w headers

I've got an 86 f-150 4x4 with a 351HO windsor. One of my exhaust manifolds is cracked. Can anyone tell me if a set of modern 302 mustang headers will work on this application, as they are very readily available on E-bay?
 
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Old Mar 3, 2010 | 08:12 AM
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they will bolt up to the engine just fine,but the exit points will be off,if they work at all,you will have to get a custom exhaust done.
 
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Old Mar 3, 2010 | 10:11 AM
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Clearance is rather tight on the passenger side. I found a set of ceramic coated Ford Racing shorties off of a Saleen Mustang, but from looking at the photo, I don't think they will fit. Is there anyone who has done this mod on their 86 f-150.
 
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Old Mar 5, 2010 | 03:26 PM
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well I got a set of Ford Racing headers for my 97 250. I have not installed them yet but I am hoping for some GOOD results. I have the same problem with the manifolds being cracked. I started to just replace them with manifolds from O'Riely's but they were not of good quality, so spent an extra 1oo.oo and got the headers
 
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Old Mar 5, 2010 | 07:02 PM
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Hooker and Flowtech sell headers for your truck @ < $200 from Summit.
 
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Old Mar 5, 2010 | 10:07 PM
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Mustang headers won't mate with the truck Y-pipe, and shorties alone will produce zero gains if the stock cats remain.
 
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Old Mar 6, 2010 | 06:10 AM
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All the emissions stuff and the cats are missing from mine. I have duel exhaust going through turbo type mufflers. Would I realize any gains in the 2500-4500 RPM range with shorties?
 
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Old Mar 6, 2010 | 07:31 AM
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I had my cat removed as well
 
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Old Mar 6, 2010 | 11:59 AM
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Originally Posted by Green Giant
All the emissions stuff and the cats are missing from mine. I have duel exhaust going through turbo type mufflers. Would I realize any gains in the 2500-4500 RPM range with shorties?
In that case yes.. the manifolds are almost as restrictive as the stock cats.
 
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