Exhaust/Header gaskets
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New User
Joined: Dec 2007
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Exhaust/Header gaskets
Well, this is probably elementary to some of you, but I would rather ask a stupid question and do it right. I recently bought a 77 F-150 with a 460 in it. I am needing to replace the exhaust gaskets. I am wondering if I can use stock style/size gaskets even if I have headers instead of stock manifolds. Also, I was curious as to what type of gaskets I should get. I dont want to be cheap and get what I pay for, but I dont want to pay more for overkill. Lastly, is it a safe, acceptable, or beneficial practice to use Loctite or similar product on the bolts here? Any other suggestions are welcome and encouraged. Thanks in advance.
Elder User
Joined: Apr 2007
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From: Los Alamos
Negative on the loctite, if anything, use antisieze. You will have to retorque a couple times, then it will be fine for awhile.
The gaskets for headers on a 460, go with:
http://store.summitracing.com/partde...5&autoview=sku
The Summit stuff is good quality for the money on most things..combine it with some other stuff, makes the shipping more bearable.
The gaskets for headers on a 460, go with:
http://store.summitracing.com/partde...5&autoview=sku
The Summit stuff is good quality for the money on most things..combine it with some other stuff, makes the shipping more bearable.
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Ive heard of guys using just the high temp RTV with no gasket but I never have checked back to see how it went. I guess I just always assumed that it wasnt a good idea but who knows. Since I am looking for an inexpensive fix I am willing to give it a try. Has anyone else used this method with success?
Elder User
Joined: Apr 2007
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From: Los Alamos
High temp range on ultra copper is 700* F intermittent. Thats not good enough for header/manifold, even though permatex "recommends" those as a suggested application.
According to Banks, (who has, I'm sure tested this completely) the exhaust gas temp on a 460 under load will approach 1700* F. The math is pretty simple....it will fail.
According to Banks, (who has, I'm sure tested this completely) the exhaust gas temp on a 460 under load will approach 1700* F. The math is pretty simple....it will fail.
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I was thinking it was higher temp than what any RTV was rated. Oh well, I guess I will check that my flange is straight then try paper or copper with RTV first. If that doesnt hold I will go from there. Also, I apologize for posting in this section. I did not go far enough down the page to see the seperate section for exhaust. Thanks!
