Discuss anyone tell me about this manifold C90X9424B on AllFordMustangs.com, the place for Mustang enthusiasts.
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robbyy, welcome to the forum. The intake that you have is a vintage Shelby part and may be quite valuable to those looking for original Shelby parts, so keep this in mind. I wouldn't do any modifications to it or it's value may be diminished.
It specs out as a 1969 intake to fit all 289 and 302 engines with the standard (Non-Boss) type cylinder heads. The intake's port size is listed as being 1.82" x .90" and the nomenclature states "Shelby High Rise Fits All Stock Heads".
A nice intake to have and it is quite rare. I'd guess it's value would be around $2000 US if one could be found at a swap meet. This is only a guess, but any vintage Shelby parts in good condition demand top dollar here in the States.
Hello. That is the Ford knock-off of the Shelby intake. It's like the GT-350 intakes, except it says Ford on the front of it, instead of Cobra, or Shelby. It's just like an Edelbrock F4B. They aren't really rare, and can be bought for something in the 2 to 3 hundred dollar range all day long A Shelby guy couldn't use it because an early 65 GT 350 uses a small letter Cobra intake with no Shelby part number, a later 65 GT 350 intake has an S1MS part number on it, a 66 GT 350 has an S2MS part number, a 67 GT 350 has the S7MS part number, the 68 GT 350s had the Ford cast iron J code intakes into like february of 68 and then Ford started replacing them with the S7MS intakes on a recall, and the 69/70 Shelbys all had the cast iron intakes. Hope that helps.
Veronica, I'm confused. The intake has a 69 engineering number and it's aluminum. The reference book "High Performance Ford Engine Parts Interchange" by George Reid states that the intake in question, C9OX-9424-B, is and I quote, "Shelby High Rise".
This aluminum intake is for a 302 engine. I know that Ford had taken over the Shelby builds and in 69 it was built "In house" at Ford. So, if this isn't a Shelby only part, on what other models of Mustang was this aluminum High-Rise used on?
You say cast iron and a Ford knock-off, I'm confused. If it's not a 69 Shelby intake, what is it?
Hi again. The 69/70 Shelbys didn't have an aluminum intake manifold. They had the same cast iron intake manifold that any other 351 4bbl would have come with. This is an aluminum intake for a 302/289. The GT-350s that came with a 302/289 all had an intake that said either Cobra or Shelby on it. This one says Ford. Ford made these as an over the counter replacement fo either the cast iron 302 intakes that they were putting in all sorts of cars, an older car that had the cast iron intake sitting on top of a 289, or, if for whatever reason, someone needed a relacement for their 65-68 Shelby GT 350. They listed it as a Shelby part because back then, much as it does today, having Carroll Shelby's name attached to something moves merchandise. They built them to sell them, not to sit in warehouses for half a century.
Hi again. It isn't a paper weight, by any means. It is a perfectly good intake manifold, identical in every respect, in all of the ways pertaining to performance, to what was used on the early 260/289 Cobras in 63 and 64. It is modeled after the Edelbrock F4B intake and the Shelby S1MS, S2MS and S7MS intakes. It will work just like an Edelbrock Performer, and is a much nicer piece to have on a car simply because of the conversations that it would generate. Many people have never even heard of that intake, and having an 'X' in the part number is just plain cool. They aren't that hard to find here in the U.S., once one is aware that such a thing even exists, but, I think that they might be a bit trickier to find in the land down under.
Thanks for clearing things up, Veronica. For those that don't know the "X" in the engineering number (Looks like a part number cast or stamped on the part) stands for a factory "Muscle Parts Program" item.
I have a C9OX-B on my 66 GT Convertible because it is a factory piece but is a little unusual and does invite a conversation or two. It looks good, runs great, and doesn't say "Cobra" or "Shelby" on it. Small point that matters to no one except me, but since I don't own a Cobra or a Shelby, I personally didn't want those. When I saw a factory period correct piece with the "Ford" lettering I decided that was better option than Edelbrock as well. I bought it NOS years ago off e-bay, I think. I was wondering if you have any interest in getting rid of yours or could point me in the right direction to find one that is in good shape and hasn't been heavily ported? My current project is a 65 GT for my wife and I'd love to have a matching set.