Hey All-- I've searched through the forum quite a bit, but can't find a lot of good information in one thread.
I've got a stock E7 engine that's been rebuilt, and I was planning to put into my 68 Fastback over the next few weeks, but I have been debating what to do with my headers. I almost bought some a few weeks ago, but put it off--and am I glad I did. I hadn't thought that the angled spark plugs would be an issue.
Is there anyone who has E7 heads on their Mustang with headers? If so, what headers did you use? I don't think I'm wanting to buy new heads at this point.
I've been told that a stock set won't work due to sparkplug clearance, and a foxbody set won't work due to shock tower clearance.. so what works?
Yeah, e7 heads (which I have, unfortunately) have no problems that I'm aware of. I went with patriot tri-y's for the sheer reason of clearance and I didn't want to be removing everything to fit long tubes.. Ideally, I wanted long tubes, but as I said.. Problems arise.
I have the e7's and the long tubes are a nightmare to work with and/or around especially with the mechanical clutch linkage. They could work if you have a cutting wheel, grinder, welder and skills but those aren't at everyone's disposal. Heard the tri-y's work well but haven't tried them myself. Currently on the hunt for a set of shortie's for my setup.
I've used E7's and have some on an engine right now. I've failed to notice anything about them that would affect fitting headers made for a much older engine. I had some on a 5.0 engine in my '67 and some Hedman longtubes meant for my '67 and a 289 bolted up just fine.
On the other hand I have some of those GT40P's too. So far I have tried eight different headers that I happened to have or borrowed and not one set so far would bolt up to those heads with the spark plugs installed. GT40P's are pretty unique.
I've used E7's and have some on an engine right now. I've failed to notice anything about them that would affect fitting headers made for a much older engine..
I should mention that I think the issue with mine is that the lt's I have aren't designed for a 67 (too much surface rust to even see a brand or part #). The tube coming off of the #7 cylinder exhaust port runs straight into the z bar. And I just don't like lt's....IMO seem to be much more cluttered than just using a simple set of shorties. The hp gain isn't worth the added effort of making them fit if you aren't racing the car.
Edit: As for the original question....after the research I have done all you need to do is order headers to fit a 67-68 with a 289 and they'll fit the e7 heads just fine.
Last edited by green67stang; 02-20-2013 at 01:50 AM.
I should mention that I think the issue with mine is that the lt's I have aren't designed for a 67 (too much surface rust to even see a brand or part #). The tube coming off of the #7 cylinder exhaust port runs straight into the z bar. And I just don't like lt's....IMO seem to be much more cluttered than just using a simple set of shorties. The hp gain isn't worth the added effort of making them fit if you aren't racing the car.
Edit: As for the original question....after the research I have done all you need to do is order headers to fit a 67-68 with a 289 and they'll fit the e7 heads just fine.
If you have that much rust on the outside of the header, chances are that you have a bunch on the inside of the header tubes also, and you have lost whatever flow advantage you would have with those headers.
If you have that much rust on the outside of the header, chances are that you have a bunch on the inside of the header tubes also, and you have lost whatever flow advantage you would have with those headers.
It wouldn't surprise me if that's the case. At a minimum they need replaced just from having all the tubes on the drivers side dented in to clear the z bar. I think I'm going to go with a set of tri-y's before I take it out of storage for the summer.
I had hooker super comps on my 4 speed no issues. Installed a 351C (NASCAR ENGINE) with super comps it took me 3 days to figure how to get the Z bar in.
Perfect-- Appreciate the responses everyone. I guess I got confused with the GT-40 Heads.
I'll go ahead and get my order in.
You were possibly confused with the GT40Ps they changed the plug to face more towards the exhaust valve. I dont care much for them. They shouldnt have angled them towards the exhaust valve as much as they did. The large boss also impaires the flame front as well as the angle of the plug. I fugure indexing plugs on the P heads could be extreamly important.
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E7 Heads - What did you do for headers?
