thanks for the advice.i rebuilt lots of 2100 and holleys over the years but these sure are different.these are good carbs when everything is in order.they were great on fuel as well.

They've gotten a bad rep over the years, but mostly undeserved. Ford had no problem putting 2 of them on the 57 E-code. There is a do-it-yourself modification that will allow you to use a 57-up distributor with the 55/56 carburetor. See Ted's article on eatonbalancing.com.

One thing not mentioned: The rebuild kits all have neoprene/vitron needle tips.  Alcohol fuel eventually makes the tip gummy/sticky.  I installed a NOS brass tip and never had a problem since.  Of course, THAT ‘teapot’ issue causes the opposite of the O.P.’s ‘flooding’ problem, but just thought I’d add it to the Holley 4000 discussion.

6 VOLTS/POS. GRD. NW INDIANA

An old time carb rebuilder I’ve used and one who rebuilds Holley 4000’s for one of the larger Thunderbird/ Ford car/Mustang parts suppliers told me 8 years ago the accelerator pump material did not work well with the ethanol blended gasoline. Has that been addressed in the recent years? 

56 Vic, B'Ville 200 MPH Club Member, So Cal.

Just for info; as most on here know, there are fuel stabilizers on the market that are essentialy for storing fuel for extended periods. However, one product that claims it "neutrilizes" the Ethanol in fuel, is Sta-Bil "360 Protection".  Approximately 2 oz treats 10 Gallons of gas. It's not cheap, probably about  $8 U.S per  bottle, which treats 50 Gallons, but having to repair or replace much of the fuel system on an older vehicle isn't either..
... N.B.- My blurb above seems to have been taken out of context in follow up here... Stabil "360" isn't advertised for long term fuel storage. It's labeled as a "neutralizer" for Ethanol with a use fomulae per gallon...


Paul

Use Stabil at your own risk.  Here in south TX, it turns gasoline into a gel after a few months.  Ruined two of my gas tanks and the electric fuel pumps.  I will not use it.  Just my experiences.  Joe-JDC

JDC

I've used it in my 2017 Ram and my daughter's 2001 S10/w no problems. My brother also used it in his I/O with 408 Windsor stroker. I filled up my 55 Tbird's tank and added Stabil before starting restoration. It's been in there for years. I probably will drain and replace the tank/w stainless and replace what could be the original fuel line, once ready for the road. If you would like, I'll check to see if it's turned to gel. 

Had I known how long the Tbird would be sitting, I would have just drained the tank and left it. 

I can add to that.  First, I have never used this products and never had a need to.  The 10 % I put in my cars in October/November was just as good in April/May when i got the cars on the road again.  The only thing that I did was start up the cars during the down time.

My son used Stabil - it gummed up his carb just like Joe said. My son didn't mention about the other parts, but I assume he had a problem with the other parts.

.



54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

I quit using the original formula Stabil after a blue accelerator pump failure (though it could just as likely been the gasohol, since failures continued).  I started using the marine formula instead (and CASCO’s black pump), but had springtime engine miss symptoms last year (until after a couple fill-ups).  Go figure.  Maybe I got the bottom of the stations tank in the late fall?
Indications again the pump has failed/needs attention  (bogging).  I burn 93 just to keep the alcohol minimized, but winter storage success is hit-or-miss, depending on health, the weather, etc.  I got away for many winters by just driving occasionally (if the streets were dry).

6 VOLTS/POS. GRD. NW INDIANA

put neddle and seat in flooding like crazy.smell the gas as your driving shut it down and its running in to no end.theres something im missingstick your fingers down the back barrels and its soaking wet.