About 10 moths ago one of these conversions was listed on E-Bay around $1000 and sold. They stated it worked like a 270 Corvette package and the left side linkage showed this.

I currently use a 52 Cadillac WCFB on a stock 56 manifold and 57 dist and it works fine with a little linkage work. I have recently aquired a 56 Merc WCFB (312) which needs some choke parts and a 54 Lincoln WCFB (317) which I have had restored and my plan is to build a 2-4 system which would run on the back carb front barrels normally. My thought is to leave the front choke parts off like the GM and use the Merc on the front and the Lincoln on the back as they both have the secondary vacuum acuator and I want that look. The Merc (and Cadillac) WCFB's have the fuel inlet on the rear and the Lincoln WCFB has it on the front causing me a little heartache with the tubing. Funny as it is the Merc WCFB's missing choke parts are the same as the Chevrolet but not the Cadillac. I can also tell you the vacuum line on the Lincoln is manifold and not venturi. I haven't checked the Merc but I will now. I'm assuming the 317 54 Lincoln used a Loadmatic distributor also. Need to assure myself of that if I use it for the 57 dist vacuum line.

My Lincoln and Cadillac carb were overhauled in Lynwood, Calif. at Alfa Carb shop. They look as new. They also did my teapot after I took if off for the Cadillac. If I ever sell the car I want all original parts to go with it. They are the shop which overhauls ALL the Holley 4000's for a a California restoration suppler and know them well. They are very "old time" and ff you saw the shop you would know what I mean. They told me the replace ment accelerator pumps are not a good as the old ones if that makes any difference to you. I think their price is fair at $150 complete.

I'm even making plans to make a copy of the old 2-4 air cleaner. May not be able to get the decal but I know to paint it red..........Good luck with your project

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140850883008&fromMakeTrack=true

Its not exact but close enough to fool the unwashed masses

I have a few of those dual quad Purolater air cleaner assemblys if interested.

Oldmics

I did this with the WCFB I'm using now. I gutted a stock air cleaner and welded the insert top to the outside and place it over a Dodge slant six filter on carb top adapters. It looks bone stock to most and when I show it to other Holley 4000 guys they like what I did.

I also like the 2-4 set-up look of a 245/270 Chevrolet with the 2 chrome air filters.   

Would you tell me what model Purolator air cleaner assembly you have for the compressors?

I have the 1956 Purolator catologue with a lot of that information in it.I"m just curious.

If you are going to build the air cleaner from scratch there should not be any size constraint issues.

The dual quad manifolds OTHER than the stock Ford spread the carbs futher apart necesseitating a larger can circle for the carbs to fit under.

The NASCAR air cleaner by Purolator unit would not work with any other Y Block dual quad manifold other than the stock Ford unit UNLESS the carburators center to center spacings are the same as the Ford distance.

The top portion of those NASCAR/Purolator cans were also used on 56 Chevys and Mopars.I also know that 56 Mopar dual quad center to center spacing is the same as Ford and I BELIEVE that Chevy carb spread distance was the same as Ford in 1956.

 Due to the carbs being spread futher apart on the aftermarket manifold.You will just need to create a larger round air cleaner assembly to accomidate the wider distance.

Hope this helps.

Oldmics

As you know I have the original NASCAR kit with the air filter and that decal.I also have another original survivor air filter with the decal.

Both of those original decals are the same which are different than the repro decal.

I would have to go back and do a comparison once again but I recall the font size is not correct on several different areas printed sections.

Coupla of other things were also not as the original but as I said I would have to go back and compare again to refresh my memory.

Which I will do! I will report back in a few days.

As I said Its a close likeness-just not spot on.

Oldmics

Seems I have opened a can of worms once I start to investigate all of the information that I have.

What I mean is that there appears to have been several runs of this decal over the years.

I"ll start with the original and then move on to the discrepency points.The various production runs have different issues when compared to the original decal.

Original decal points of consideration for comparison purposes to repros would be

Orange backround with a decal size of 6" X 2 1/2 ".

On the decal where the printing states    WHEN DIRTY REPLACE REFILL WITH PUROLATOR TYPE AF-

Style of font on the "A" where the printing states   AIR FILTER

_______________________________________________________________________________

Differences would be

Current unit on eBay has RED backround color-should be ORANGE

While the decal on eBay is size correct I have a repro that is orange backround in color BUT is sized smaller at 5 13/16 X 2 5/16

On the original decal the printing states    WHEN DIRTY REPLACE REFILL WITH PUROLATOR TYPE AF-

On the eBay offering it is printed as TYPE AF-1    Should not have the "1",should be blank after AF-

The font differences of the letter "A" in the word AIR is difficult to explain.The eBay unit is correct with two different widths of the "A" legs in the word AIR . 

 Again I have two repros where both of the "A" legs are the same thickness.

The "A" letter in the word AIR are two different widths.

I went to the Osborne site to see his offering.Unfortunatly it does not show a picture of his decals.

So I have yet to see the perfect reproduction decal.

Oldmics