I just picked up an intake that is supposed to match with my '66 289 4v heads but is really impressive looking ie the front carb ports are only 1.4" but the backs are a huge looking 2.3" with big runners etc. The heads, which had the # for HO but in '66 it wasn't standardized yet and it didn't have the cast in spring landing grooves (wording?) etc used to identify the ho so it was the 4v version- but this intake- wow...
numbers on it are J141 and 8288751. Anyone have any history on this...huge secondary ports!!

 

never seen a ford intake like that sounds like a chevy........never heard of a 289 4V heads.......I don't think they even made a 4v head for 289 302 or 351W I know they did make a 2v and 4v head for the Cleveland but......If they did make a 4v head for the 289 302 it's not any different from a plane jane head.

That intake should have a number like C6OE or something with C6 in it......

 

I just talked to my brother and the only 4V head ford made was for a 302 one your only 68 or 69 and they were not much better then a regular head, smaller chambers I think.

Also a Hipo 289 had stock heads for that year only difference was they had screw in studs for adjustable valve train and the spring pockets were deeper because of the higher lift solid cam they used.

 

i was under the impression that they had both H.O. and 4v heads in 65up. '67 they got the numbering system figured out. I researched this with the mustang clubs who know and look for 289 parts.

look at this older thread: https://www.ford-trucks.com/forums/4...ads-value.html

so either the bro needs to get out more or all my past research is questionable.

this is funny thought as the machine shop took my 289 intake and returned a chebby intake...i didn't catch it...off to raise some hell.

 

1965/72 car parts catalog states that D1OZ cyl head needed the valve seats ground to install HP valves. This head was a replacement for the earlier C5ZZ head, as the part number reflects 1971. The D1OZ head was also used on the 302 "Special" engine, which was NOT the Boss 302 engine.

 

1965/68 GT350 & 1965/69 289/302 4V High Riser Intake Manifold: C9OZ-9424-D

1969/70 BOSS 302 Aluminum: C9ZZ-9424-C

1969/71 Mustang BOSS 302 "off road" Cross Boss: D0ZX-9425-A

1971 Mustang BOSS 302: D1ZZ-9424-E

Note: 1965/72 Ford car parts catalog is the last printing (5/75), which means it has updated part numbers.

 

Sounds like the manifold on my grandfather's 65 mustang. It had a Quadrajet style carb like that on it. It was a one-off vehicle made as a special from the Ford engineering shop with lots of strange parts like 4-wheel disk brakes. The car was a favor to my grandfather from Henry Ford II? Loaded with everything but priced as a white 6-cyl mustang, everything else was "NC". Pissed the originating dealer off so bad he refused to sell it but a call from HQ solved that problem. The engine air cleaner sticker said 289-4VHO but it was all special. Finding maintenance parts was fun. My grandfather kept a little notebook for the parts that would fit. A practice I have carried on to this day with any modifications I do. The owners manual was about useless but it had one. He had to take it in to one particular Ford dealer where the parts manager had figured out what most of the parts were. Thankfully it was a near perfect vehicle with very little work required except some adjustments to the limited slip unit in the rear axle. At one time I knew what the disc brake pads crossed to but I have slept way to many times since then. AFAIK after being wrecked twice by idiots hitting it fore and aft, there was not much left of it that was original and it was deposited in a wrecking yard in NE Kansas.

 

Special vehicles, even cars, have a special DSO (Domestic Special Order) number. The DSO will be 6 digits. If the Mustang was shipped to the KC zone, the DSO's first 2 digits would have been: 53. The next 4 digits will be the special order number.


Why am I telling y'all this? If the Mustang had a special DSO number, one call to FoMoCo would tell the caller not only what parts were special, but give the part numbers, too. This system is still in use today.


Your Mustang, in any condition, would be worth mega bucks now.

Not as much as the "Treasure in a Cornfield" ....but close.

 

Take some pictures.........Like to see that intake......

 

I think my cousin still has the paperwork. He has had a couple strokes since then and is a little fuzzy on where it might be. One of these days I will get around to really trying to dig it out. The paperwork itself would be a novelty. The window sticker itself was hilarious! 2 pages of NC items at a time with a 6 month waiting list for a mustang. This one was delivered 6 weeks after the order was made. The dealer was PO'd about the order too, demanding a $500 non-refundable deposit just for ordering the car. He was not happy with a written description and no sales or package codes for non-existent "options". He figured the deposit would get rid of my grandfather but he whipped out the old checkbook instead. Mr Ford just needed a sales order from a dealer to start work. Henry drove it for a week or so and liked it. I can imagine that any tweaks it needed were taken care of rapidly for the boss. He was going to get one like it for himself but I never knew if he did.

The car was stopped and smashed from the rear by some woman putting on makeup doing 50 in a 30 on her way to work. The rear half of the car was destroyed. It was given to my cousin and repaired with parts as close to the original as he could find. He owned a shop at the time. 2 weeks out of the shop with new paint it was hit head on by another woman driver that crossed the line at a combined speed of around 100MPH. It was lucky my cousin was not killed. There was really not anything left of the car at that point.

I am not sure the engineering shop recorded any of the parts used. The vehicle did not go down the line. It was hand assembled from experimental parts. Some probably with no real numbers yet.

 

The 65-68 Shelby intakes had a Shelby part/casting number, these would not be the C9OZ-9424-D intake which was an over the parts counter item thru Ford parts dealers starting in 69. They're both the same basic intake, just not the same numbers. There was also a 351W version of the C9OX intake.

 

You are correct. The problem is, the parts books are updated, as I mentioned, and when this occurs, anything obsolete over a year is removed from the book. After I posted, I remembered the Shelby part number prefixes of S1MS and S2MS.