Manifold gaskets
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From: Burlington, WI
Manifold gaskets
I have a 400m that is in serious need of exhaust gaskets. I have $25 to spend on them. Can anyone tell me the best brand of gaskets for my engine? Part numbers would be helpful too if you have them.
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From: Burlington, WI
I've seen a couple of types. Some look have just the openings for the exhaust ports, others have an upper lip on them. I don't know which style to get...I think I'm supposed to get the ones with the lip on them...
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From: S/W Missouri, Polk county
Here is what I use on my headers with great results. I am sure the same style/material could be found for stock exhaust manifolds.....
FYI the manifold bolts can be prone to breakage and then your world gets ugly, but it survivable.
Header Gaskets 351M,400 V8 1975-82
http://www.summitracing.com/search/d...-size/6-6l-400
Percy's High Performance one's have a great rep.
FYI the manifold bolts can be prone to breakage and then your world gets ugly, but it survivable.
Header Gaskets 351M,400 V8 1975-82
http://www.summitracing.com/search/d...-size/6-6l-400
Percy's High Performance one's have a great rep.
Moderator & parts slinger
Joined: Feb 2007
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From: S/W Missouri, Polk county
I got a new set of Hedman fenderwell exit headers in a parts trade and put them on my ol red 79 mud truck. All because one of the stock manifolds was cracked in two, and the PO tried to fix it (see EPIC FAIL), lol.
Does it really make a power difference in a ol tired 351M with a edelbrock intake and Holly carb?? The headers go to a set of open stacks right behind the cab (see REALLY FRIGGING LOUD in Websters) so I do not know, but the wife loves it so I'm good with it.
Headers are prone to leak, and the cheap ones will rust a whole lot faster than stock exhaust manifolds. But there must be some benefits since a ton of people put them on.
Remember that statement about breaking exhaust manifold bolts....there are a few threads about this problem, I wrote up a detailed header install/broke bolt fix in one thread reply.
Become one with the search option, there is lots of info out there on this issue.
Does it really make a power difference in a ol tired 351M with a edelbrock intake and Holly carb?? The headers go to a set of open stacks right behind the cab (see REALLY FRIGGING LOUD in Websters) so I do not know, but the wife loves it so I'm good with it.
Headers are prone to leak, and the cheap ones will rust a whole lot faster than stock exhaust manifolds. But there must be some benefits since a ton of people put them on.
Remember that statement about breaking exhaust manifold bolts....there are a few threads about this problem, I wrote up a detailed header install/broke bolt fix in one thread reply.
Become one with the search option, there is lots of info out there on this issue.
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Yeah, I use Percy's on my long tube headers. They're the only ones I could get to seal correctly.
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From: VA
You really see more of a difference with them if you have other mods that headers would add to. If you've already got a cam, intake, and good flowing heads, you'll really feel the difference with a pair of long tubes. If it's a stock engine they'll still make a difference, but don't set your expectations too high.
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Ok I found three different gasket types on eBay and I need your help figuring out which one i need. Here are the three links:
Ford 351M 351C 2BBL 400 Exhaust Manifold Gasket Set 1970 81 | eBay
New Exhaust Manifold Gasket Set 1971 72 73 1981 Ford Mercury 351C 351M 400 V 8 | eBay
New 1970 1971 1972 1973 1974 Ford 351C 351M 400M 2V Exhaust Manifold Gaskets | eBay
Ford 351M 351C 2BBL 400 Exhaust Manifold Gasket Set 1970 81 | eBay
New Exhaust Manifold Gasket Set 1971 72 73 1981 Ford Mercury 351C 351M 400 V 8 | eBay
New 1970 1971 1972 1973 1974 Ford 351C 351M 400M 2V Exhaust Manifold Gaskets | eBay
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From: Burlington, WI
Also I know about the breaking of the bolts. Fortunately, the bolts on my manifolds are loose enough to back out pretty easily. I tried most of them the other day and I don't think they will be too hard.
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