I just bought a Ford 1985 F 250 with a 460 . It has 90,000 miles and
possibly all the options . I really made out good this time . I'm curious,
it looks like a near generic Holley 60's - 70's style 4 barrel. Can I get an old Holley and just pass on all the smog things ? Also this has a Over/Underdrive
that I don't completely understand . The O.D. is a gear vendors brand . I
think I may have got it into over drive . But don't remember . John

 

Posted in the wrong forum ( Newer Light Duty Trucks > 2015 F150 ).

Try posting in ...------------------------------

-click- the pic'
Goth 150
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Welcome to the forum BIGRED4130.
I see you got moved to the '80-'86 forum.

"pass on all the smog things"
What smog things do you mean?

Bowl vents that connect to the charcoal canister?
There really is nothing else about this carb that is "smog" except the tamperproof idle mixture screws and choke cap adjusting screws.

 

I know what he is trying to do, get rid of all those vacuum lines. Yes, you can swap in a simple aftermarket Holley carb, and hook one simple line to the PCV, another to the vacuum advance on the dist, and you will have maybe a couple more to the HVAC controls and the brake booster. You can also block off the EGR valve with a plate.

Before you strip it all down though, make sure you will pass inspection if you have them. I would keep the original aircleaner and the heat tube to the exhaust manifold, and all it's vacuum lines. I see you live in Washington, and it gets cold up there. You will need this added heat to the carb on cold days, and also the large aircleaner helps "hide" the aftermarket carb and all the missing lines.

 

So other than the distributor advance & PCV ( which both need to be connected anyway) and the bowl vents what lines connect to a 4180 carburetor?
The EGR, ABV, Brake booster and HVAC all connect to manifold 'trees' or thermal VCV's.

How is swapping to a 'generic Holley carb' going to change any of this???

BTW, I would suggest a 4160 style carb made after 1991.
These have PowerValve blowout protection built in.

 

It's my experience that Ford calibrated their carbs tightly to the engine configuration. That's jetting, idle air, etc. If you take all that stuff off, it never does seem to run right sometimes. Runs rich at idle, pings under load, etc. The generic holleys have more general jetting, more mixture adjustment at idle, and just seem to work better on a "non-emissions" engine.

 

Oh no Dave,
I agree to keep the 4180.
They are well calibrated.

I was only saying NOT to get a '60's or '70's Holley, but a more modern one if you must get one.
If the shafts are shot and the metering blocks are distorted there's little you can do to service it economically.