Help me pick a Carb for a 460!!

[Yarrin]

We need a new carb for my Dad's 460 F150 (1978). I already have the adapter plate for an aftermarket 4 barrel but need help picking something out. It is bone stock and is just used for truck-like things.

Also, I saw that the 460 has a huge retard in timing and if I order a 71 timing set (I guess from a 429) that it will set it back to zero. Is this true?

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What do you think?

[Monster]

Since you are not looking for a performance improvement, what is the CFM of the stock carb you are replacing ?

[BBR]

Timing set: Maybe. You have to be careful. A "straight up" set will have the keyway and the tooth with the mark directly lined up. Just like the triangle mark in in this pic.

As you can see, the "0" mark on this Summit gear is actually retarded and the rectangle mark is a full tooth retarded.

[fatguyzinc]

"THEORETICALLY", cubes x max rpm divided by 3456...

460 x 6000rpm divided by 3456 = 798cfm....
so a 750-850. and 460s LIKE big carbs, it will
probably run fine even with a 930 or 1050...

i would NEVER run a 600 on a 460, even a bone stock one
unless it was dual 600s!

[DanStokes]

There is a cheating way to pick carbs - it's how I picked the 4 barrel for my 250" Chevy six and also my 215 CI Buick. Call Holley and give them the specs (engine size, stock cam, rear axle ratio, intended use) and they'll pick a carb that's appropriate for the rig.

As far as timing - chances are good that it's ready for a new chain and gears anyway. BBR has messed with these engines so I'd go with his recommendation but a stock double row chain set is likely a good way to go. If you want to get fancy you can put a timing wheel on it, pull a valve cover, and dial the cam in to the best specs for your application. Again, BBR and/or the Internet probably has the best suggestions.

Dan

[cstmwgn]

I'll throw in my
Timing chain YES - YYYEEEEESSSSS!
Even with the pathetic late model smog heads, the straight up timing set will show a noticeable improvement in performance.
As to carbs - I pretty sure the world of OEM replacements would say 600 is the ticket. Myself, I would go with an aftermarket 3310. A 750/780 with Vacuum Secondaries works very well on those engines. IF it was mine, it would have metering blocks for both the primaries and secondaries, dog leg boosters, quick change vacuum secondary spring top. Then depending on driving style (throttle pedal finesse) most likely a larger squirter and more aggressive pump cam. The 30cc accelerator pump should be fine.

[SuperBuickGuy]

"THEORETICALLY", cubes x max rpm divided by 3456...

460 x 6000rpm divided by 3456 = 798cfm....
so a 750-850. and 460s LIKE big carbs, it will
probably run fine even with a 930 or 1050...

i would NEVER run a 600 on a 460, even a bone stock one
unless it was dual 600s!

stock 454 TBI is 580 cfm. while I would never do stock, 600 is likely enough for a truck - nice throttle response too

[Captain]

See that you are a new guy.
welcome!!
ALSO your Avitar, I think I have found my Dobbleganger !!
I have a gas guzzling 460 in a 1 ton Ford E350 van. Years ago replace the carb with a Holley 650, and did put a larger accelerator pump jet, and cam as It would stumble off idle once warmed up. Runs fine for my DD, and pulls my loaded car hauling trailer just fine.
Fuel miles, no trailer 10 -11, loaded trailer, 8 mpg

[cstmwgn]

...Fuel miles, no trailer 10 -11, loaded trailer, 8 mpg ...

I thought we were talking Ford 385 series engines. IF SO - then anything in double digits is a bonus!

[Eric]

You stated, for doing truck things. So , I take that as hauling things in the bed and maybe towing, loading up the engine, working it.
I doubt you'd be spinning the engine up past 5000 rpm while doing truck things.
Most likely it mostly be in the idle to 4000 rpm 90% of the time.
IIRC Holley makes a 780cfm vacuum secondary 4 barrel.
I'd think a 650 would be too small when the engine is being worked and loaded.
I'm no expert, So. If I was you I'd call either Holley or Edelbrock and tell them what you plan on. and let them give you part#'s for the carb. that best work for you.
Holley 1-866-464-6553
Edelbrock 1-800-416-8628

As for the timing, sorry. no idea we don't have many Ford 460's in my country.

[SuperBuickGuy]

As for the timing, sorry. no idea we don't have many Ford 460's in my country.[/SIZE][/SIZE][/FONT]

out of curiosity, are there many? I have friends in Bolivia (and help them with their Suburban and FJ40), but always figured full size trucks were an anomaly rather then something sold there from the dealerships...

[Eric]

out of curiosity, are there many? I have friends in Bolivia (and help them with their Suburban and FJ40), but always figured full size trucks were an anomaly rather then something sold there from the dealerships...

American iron, gets in That was never sold new here. I'm not sure if anything was sold new here from Ford with a 460.
To be honest never paid much mind to vehicles, till I saw a few reruns of Top Gear. Then on Vacation got to drive a v8 Holden And that peaked my interest.

[SuperBuickGuy]

American iron, gets in That was never sold new here. I'm not sure if anything was sold new here from Ford with a 460.
To be honest never paid much mind to vehicles, till I saw a few reruns of Top Gear. Then on Vacation got to drive a v8 Holden And that peaked my interest.

they get in but they never leave (scroll down to Bigfoot 9)

https://en.wikipedia.org/wiki/Bigfoot_(truck)

[Eric]

they get in but they never leave (scroll down to Bigfoot 9)

https://en.wikipedia.org/wiki/Bigfoot_(truck)

Well. that sucks.

[derbydad276]

THIS!!!!!
you will thank me... more money than a carb but drivability ... easy starting.. better fuel economy...
this company makes retro systems to fit other engines using GM throttle body systems ...
its NOT a Racing Engine !

https://affordable-fuel-injection.com/