Have stock 460 out of an RV in my 77 f150 4X4 currently has a edlebrock 1405 model which I think is 600cfm. Anyways carb has gone bad and I dont know how to rebuild so am gonna buy reman. Should I.jist get same one or something else. Have Wieand intake. My carb has electric fuel pump and when turned on gas just overflow out of carb

 

You sure your fuel pressure isn't to high?

 

It has a regulator on it, but I haven't checked the pressure, I plan to buy a pressure gauge today to double check

 

Overflowing fuel when you turn on the electric fuel pump could be a few things. Like others have said, the fuel pressure could be too high forcing the needle off its seat. The needle seal could have gone bad, you could have an obstruction, or the float has a hole in it and cannot close the needle when the bowl is full. Seals and diaphragms get old and can fail. There are all kinds of videos on youtube that can walk you through the rebuild process. Rebuild kits are cheap and really not that complex to rebuild a carb.

I am a big proponent of learning about carbs if you are going to use one. You really cannot just order one, slap it on your engine, and expect it to work properly. There are things you have to adjust on carbs for your particular engine. Cubic inches, cam size, elevation, whether your engine is automatic or standard, all play a factor in setting a carb up to make the engine run correctly. This will be a pain in it of itself if you order a new carb. Rebuilding won't be much harder.

That being said, if you are really intent on buying new, I would have a hard time being brand loyal. Also depends on your price point. All carbs work on the same basic principles, it just depends on the mechanisms to do so. For example Holley uses jets to set the air fuel ratio, so to change it you have to have different numbered jets which can set you back some money. Other carb brands used a tapered needle in an orifice. Adjusting the position of the needle adjusts the air fuel mixture. Some tune into the vacuum of the engine, and others run strictly on mechanical linkages.

 

I am buying from Left Eye Blind the next time I need a carb. I am so done with buying rebuilt.

Lots of good things there, not cheap but some friends say the customer service and support is the best.

 

Toss a summit 600cfm carb on there, its pretty much a 4100 clone and has annular boosters.

 

Another reason not to use electric pumps, I don't know what the fascination is with them .

If you have an Edelbrock you need a new carb anyway. I don't know anything about the Summit s but I'm sure they're contracted with a decent manufacturer. myself I only use Holley, a 600-750 cfm 4160 series with an electric choke would do you a great job. get the single line feed model if you don't want the dual feed hassle. about $350 off ebay brand new.

 

The summit is a Holley 4010 clone like the Edelbrock is a Carter AVS clone.
And of course the 4010 is a revised 4100 Autolite. The summit carb is less the $300 come with a complete print manual on set up and tuning.
600CFM is a bit on the small side for a 460 unless you do not plan on ever spinning more than 4000RPM or so

 

In that case I'd really lean towards the Holley 4160 . for a few bucks more you get the best, and every part you could ever want in stock at your local parts store.

 

I use Holley's as wheel chocks for my Edelbrock equipped light duties & the medium duty runs on the pane through an Impco mixer.
if I was going racing I'd look at Quickfuel & then I'd need an electric fuel pump to supply the hungry engine because a mechanical fuel pump can't.

I'd vote for rebuilding the Edelbrock...super easy & easy to tune!

 

I use a edelbrock 1406 on my 302.. it has been fantastic.. I had to rebuild it when I bought it used tho. But it has been great since. You may have to add a fuel pressure regulator as these carbs dont like much psi.. i think 4.5 is the recommendation..

 

The Edelbrock is simply a Carter AFB, and Carter went broke. . Holley is still at the top of the food chain building the carbs that made them the industry leader .

That's the great thing about capitalism. the best thrive and the weak fade away.

 

Give the cost difference it is hard to justify the Holley on anything but a high performance motor. The Summit uses all Holley bits Jets secondary springs linkage kits power valves etc. Plus you get the advantage of more efficient annular boosters and is much simpler to tune especially for the novice. I have never been a fan of the Carter/Edelbrock The AFB is a decent carb but has it's issues , the AVS was a failed carb design from the on set and has taken literally decades to get it to where it is now. When they work they work great when they don't OMG.. The Summit carb currently is by far the most simple after market carb currently available and since it is based off the Autolite 4100 (probably the best 4bbl carb ever made) it is fully Ford compatible with no accessory linkages needed for Ford applications. The Summit carbs are made by Holley for summit.

 

Okay, so I am running just a Stock 460, my son uses it daily to get back and forth to school. Is 600cfm undersized or should I go up to 750cfm?

 

600 should be fine, it won't support even a stock 460 much above 5,000 RPM. Being in a truck I wouldn't think you need to be above that anyway. I guess you can think of it as a rev limiter for your son on his school commutes. If you run it above 5,000 RPM on a regular basis or modify from stock, then you should go up to a 750 CFM.

Mark.