Does any one know where I can find good header gasket for my 4.6L F150 with JBA headers? The gasket that came with the headers are not very good. I went down to my local speed shop and apparently, there are no listings for header gaskets for the 4.6L. I hope someone can help me. Thank you!

 

Go to JBA's website. I have gone through two sets of less expensive gaskets and returned to buy the ones from JBA. There are probably better gaskets out there but the JBA's worked great

 

I found it! Thank you very much for your reply.

 

Hey tobyk:

I'm curious about what problems you have had with the JBA's gaskets. I installed a pair of JBA on a my 5.4 2001 F-150 HD and I'm getting what sounds like an exhaust leak when the engine is under load. It is a flutter sound on the driver's side only when the engine is load. When cursing or at idle the noise is gone. No ticking like a leak would normally make. I had a garage and a muffler shop check it out and both say I don'y have a leak. I called JBA and was told that all 4.6 & 5.4 engines with JBA shorties make this sound. JBA said it is the air resonanting in the pre-heat/cat section of the exhaust next to the header collector & flange.

I'm not sure that I believe this is true. How does your set sound. I also though I had a gasket problem but I'm having a hard time proving it.

Thanks
B150

 

Buck150-

after I installed the headers, there was an exhaust leak.
That was the most miserable 7 hours I spent on that truck, so when I heard the exhaust leak, I took it to the exhaust shop and they repaired the leak. I had to buy a new exhaust gasket in order to repair it. That's when I found out how hard it was to find exhaust gaskets for my truck.
After the repairs were made, the leak wasn't there, but to this day, I still hear something that sounds like an exhaust leak, but seems really faint. From what I heard, it is normal for headers to sound like that. Like you, it only comes out a low rpm and under load (like going up hill in OD). I've been meaning to check the header bolts, since they do tend to work themselves out; even if I do have Stage 8 locking bolts. I am curious to find out if that sound is normal. The only repair I did to that was to turn the radio up louder.

 

tobyk:

I second the "turn up the radio"....Adding a Flowmaster 40 also helped!!!!! If I find out anything else will let you know...

Have you called JBA to ask about the the sound you are hearing?