Ford 400-4V

Allegedly, there were 400-4v engines planned/maybe produced for Commiefornia emissions.

Edited by 72FordGTS - 15-March-2018 at 8:27AM

i'd have to assume that the air cleaners had a 400-4V decal on them?

they were 'produced' and in service, many testimonies from people that had one or serviced them

the one we have pics of was found in a junk yard IIRC, so it was out in the world doing it's thing. the D7AE stamped casting date puts in tough time period, catalytic converters were here to stay and carbs were on the way out fast because they puked the cats, the mfgr's needed precise fuel control good chance that's the reason the 4300-D went bye-bye? August 1976 Pop-Sci did an article on Ford's new VV carb

https://books.google.com/books?id=EgEAAAAAMBAJ&pg=PA78&lpg=PA78&dq=ford+variable+venturi+carb&source=bl&ots=I_vqrb1aEX&sig=PFNIVNEQUPAGHU07SOmww4tWOWs&hl=en&sa=X&ved=0ahUKEwjoj_e5hOPZAhWIrVkKHfLnDGUQ6AEIcjAL#v=onepage&q=ford%20variable%20venturi%20carb&f=false

listings show coverage starting in 1977

old forum links http://www.network54.com/Forum/119419/search?searchterm=XE193476&sort=match

intake cast number



EGR number ink stamped, consecutive to the intake number



it's not a Cleveland or a 460










Edited by Rockatansky - 10-March-2018 at 12:48PM

No i don't think the 400-4V ever went forward into normal production but the XE examples didn't stay in-house either. the 2nd pic here, http://351cleveland.wikifoundry.com/page/Ford+400+4V $68 according to somebody that knows means this intake is at least the 68th example produced, i forget if it meant 68 total or each was stamped in succession and there could be more? another hitch in the giddy-up is the block cracking problem the Michigan Casting Center had in/up to early 1977. if the 400-4V's were built on MCC blocks there's a good chance most of them went back to Ford puked under warranty or recalled

Carroll won't answer but has anyone tried calling?  http://www.shelby.com/?topic=contact


Edited by Rockatansky - 10-March-2018 at 2:55PM

Edited by 72FordGTS - 15-March-2018 at 8:11AM

we've been looking for documentation like this for Years



Edited by Rockatansky - 14-March-2018 at 3:11PM

The ranchero book claims that the '78 Shelby GT Ranchero used a 735 C.F.M. Holley carburetor, but I have never seen or heard of a 735 CFM Holley carburetor with a Motorcraft 4300D spread bore throttle bore design, such as in the pictures of the 400 4V "X" experimental intake manifold, that was shown on the upper post's of this thread. Maybe ford had used a different square bore throttle bore design intake manifold on the '78 Shelby GT Ranchero's to fit the Holley 735? Or maybe they used a special carburetor to intake manifold adapter. There is a picture below of a motorcraft 4300D spread bore carburetor gasket.

Edited by dave302 - 15-March-2018 at 10:43AM

did you know holley made a 3bbl carb?

So based on everything laid out so far, it seems Ford planned to introduce a 400-4V for 1977 as the top engine option for the T-Bird and as an available option for the full-size cars.  It seems they planned to use it to meet the CA emissions.  However, as we know this didn't actually happen.  My guess is they couldn't get the engine to pass emissions so they abandoned it.

Edited by 72FordGTS - 15-March-2018 at 4:35AM

http://www.ford6v.com/ford-6v-tech

"351C 6VFORD 366 NASCAR ENGINE PROGRAM
Bob Champion’s 351C ,  The Cleveland 6V intake manifold. According to Tom Vaught, recently retired after 39 years as Ford Motor Company’s Boosted Engine Design Engineer and former Holley Engineer on the design team responsible for the development of the Holley Carburetion for the Cleveland 366 6V intake manifold, this 6V carburetion program came about through Ford’s 366 NASCAR Engine program where they built 500 366ci Cleveland motors with 6V intakes for NASCAR competition, only to have NASCAR disallow their use, causing Ford to physically destroy all the intakes. As apart of the Ford NASCAR 366 Engine program, Tom Vaught of Ford Motor Company (Holley Carburetors then) was a member of the design team that built the Holley 2300 6V carburetors for this special Ford project, using Holley 2300 vacuum secondary 6V carburetors.


During the testing, it was determined that the 1350cfm flow of all three carburetors was too much air and fuel for the Ford 366 program so these carburetors were sleeved for the Ford NASCAR 366 Program. After the comprehensive destruction of the 500 original motors, intakes and 1500 Holley carburetors, very few survived. ... When Ford cancelled the Ford 366 NASCAR program, they decided to abandon the Holley 6V carburetors which they had Holley develop for them. Holley then offered them to GM and MOPAR. GM was not interested, but MOPAR was. ... "

Not liking what I see. Casting on this block is not what I had hoped to find as to it's birthplace. Will have to clean it a bit then get the cast numbers from above the starter.

Edited by handsofstone - 02-December-2018 at 6:55AM

I had a prototype aluminum 4v intake for a 400...bought it from a old Ford guy that worked in the XE Ford department....
I sold it to a XE Ford collector and He had another 4v 400 aluminum intake and his Dad worked on the XE 400 engines and He had 1 or 2 of the XE 400 motors that his Dad had gotten....Won't say who this guy is as He doesn't want people to know He has this stuff...

was this a true 4v headed 400, or just a 4v intake on the regular production 400 with 2v heads?

Yep...the early intakes were aluminum and 4v ports like the one I had...the 76-77 were cast iron with 2v ports....
AND NO...I don't have any pics...but I got a BOAT load of cash for my intake....