Only place I can think of is Red's Headers. They have Y block headers in their catalog, but not sure if they have exactly what you need. http://reds-headers.net/
Hmm. Looks like everything available is for the FE. Must not be a lot of small block full size Fords of that era rolling around. I tried checking Headers by Ed, but they are apparently in the process of moving and don't have anything listed on their website. I'm not sure what your manifolds look like, but I believe there are 289 Hi-Po manifolds that should be very close to regular 289 manifolds, but flow better. I also believe regular 351w manifolds are similar to the 289 hi-po manifolds and probably much easier to find. Might take a bit of trial and error to figure out what works with your car.
Your motor must be a 64 and up, no 289 in 63, just the 260. anyways..... These high velocity long tube headers fit 260-289-302-351W V8s in 1964-73 Ford Mustangs with floor shift automatic or manual transmissions. Works with C-6 Automatic, but does NOT work with '71-'73 manual transmission. NOT for use with Dart/Windsor heads or Boss heads. 1-5/8" primaries 3" collectors Available in plain steel or with our Armor Hot Ceramic Coating. http://www.speedwaymotors.com/1964-73-Mustang-Long-Tube-Headers,34088.html I can't say about clearance ishues, but I would imagine you have lots of room. Best to do all your homework before you buy though,
Tedy, I could swear my Dad's '63 County Sedan had a 289. I know it only had a 2 spd automatic because though I was only 9 years old at the time, I couldn't talk him into getting the 3spd auto. I think they called that one a cruiseamatic.l
I'll be damned, I swore it came out mid 64 but I guess not. http://en.wikipedia.org/wiki/Ford_Windsor_engine In 1963 the 289 was available in two forms: with a two-barrel carburetor and 8.7:1 compression, (SAE gross) rated at 195 hp (145 kW) @ 4400 rpm and 258 lb·ft (350 N·m) @ 2200 rpm. The two-barrel 289 replaced the 260 as the base V8 for full-sized Fords. The second form was the K-code listed below, in 1963 it was available only in the Fairlane.
I was thinking about this a little bit this morning for some reason. You might try to find a set of later model Mustang 5.0 headers. Not sure of exact years, but '86-'90 definitely had them. They are shorty headers, but perform relatively well. Most importantly the stock factory headers can be had for quite cheap. They fit on my '91 Crown Vic since they are quite compact. I haven't found a set of long tube headers that will actually fit my car so these will do. Anywhoo if the stock shorties fit then there are also plenty of aftermarket options available for you in shorty form for the Mustang platform. My guess is the shorties will fit just fine for you. It's cheap enough that it's worth a shot anyway.
Anyone come up with a solution on this one? I'm rebuilding my 289 from my 63 ford country sedan wagon and will need some nice headers, cause I'm not going to put the old rusty ones back on. Lol Any help would be appreciated!
Holy resurrected thread, Batman! I think Kevin Varnes' suggestion of Mustang shorties would be a nice go, since this thread is five years old. No telling if the long tube headers are still available or even in production at all. And 351W manifolds can do in a pinch, but you may have to use the '77-'79 intermediate platform ones (LTD II, T-Bird, Cougar, Ranchero) for steering gearbox clearance issues.
I agree with Silvertwinkiehobo's suggestion of agreeing with my suggestion from five years ago. Pick up some cheap stock Mustang 5.0 headers and see if they fit. If they do there are about 5 billion aftermarket designs which look much prettier to choose from. I've got a set of stock (well one side is stock and the other appears to be aftermarket) headers that have been hanging in my garage that you can have for cheap. Otherwise go to a swap meet and look for a set.
Ok I will bring this thread back one more time. I have found that the mid 90's F150 manifold replacement headers work. As well as stock F150 manifolds.