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Carb recommendation for a 460 Ford

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Kicosalor View Drop Down
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    Posted: 27-December-2018 at 12:47AM
I need a good recommendation far a carb on a Ford 460 engine https://mechanicfaq.com/carburetors-for-ford-460/ . The engine is out of a 77 Lincoln Mark V and is going into a 78 F250 with a 4 speed trans. The motor is all stock with 8:0-8:5 compression, except for the double roller timing chain I put in at zero degrees up. The 460 has to only turn a alternator and a power steering pump, this is two less accessories to turn when it was in the Lincoln. I live at a elevation of 5500 feet and don't need as much cfm as per say sea level. The truck is going to be pulling a twin axle 18" flatbed trailer everyday around town(work truck). I would like to get the best milage possible but on the other hand I will need the power at times. The stock carb was a 600 cfm Ford Motorcraft 4350 four barrel spread bore carb(junk). I have a adapter plate to fits a standard four barrel Holley or Edelbrock carb on the stock spread bore intake. I was thinking maybe a 650 vac sec Holley with a electric choke or would a 750 Holley or Edelbrock be better or too much? Any suggestions would be appreciated.

Edited by Kicosalor - 27-December-2018 at 12:48AM
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aquartlow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 27-December-2018 at 11:01AM
Make sure you install an early 68-71 timing set like a Cloyes 9-3122, it WILL have straight up valve timing when set at 0 degrees. The later 72-87 sets(like a Cloyes 9-3130) WILL be 8 degrees retarded when installed in the straight up 0 degree timing marks. I would recommend degreeing in the cam/timing set to be absolutely sure, I set an off-brand timing set @ 4 degrees advanced and later found with a degree wheel that the timing set was installed 8 degrees retarded. If you want your 460 to run at it's best DO NOT rely on the "dot to dot" timing set installation method. As far as carb goes, I like a 750 cfm #3310 version of a Holley with electric choke, 71 or 72 primary jets, 6.5 power valve(a 4 speed may like an 8.5 power valve better) and black secondary spring. A Holley #1850 or #9834 600cfm carb will work, but since these are so small the secondaries will be opening around 18-2000 rpm no matter what secondary spring you use(black has the highest tension). I had an '82 F250 with a 460 I pulled from a '76 T-bird, using the stock cast iron intake(THE BEST manifold for making low end torque) 8.0 compression, Melling MTF-4 camshaft and cleaned up the EGR bump in the exhaust port. Mated to a C6 auto and BW 1345 transfer case, it had enough grunt to burn both rear 39" Swampers with 3.54 gears and got 10.5-11mpg at 60mph. I could not find much of a difference in mileage between the 750 and the 600 cfm vacuum secondary carbs, tuning is the key. I have never run an Edelbrock and have heard good things, just know my way around a Holley carb. Hope this helps and sorry for the long reply.

Edited by aquartlow - 27-December-2018 at 11:02AM
www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires.

No matter how good she looks, somebody, somewhere, is tired of her sh*t.

Beauty is skin deep, ugliness goes clear to the bone.
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aquartlow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 27-December-2018 at 11:23AM
I would also recommend "tuning" your Duraspark's timing curve(if still using the factory distributor), really makes a difference in power and mileage with very little cost. Here is a good link for Duraspark tuning info: http://www.reincarnation-automotive.com/Duraspark_distributor_recurve_instructions_index.html
 
BTW, Welcome to the forum!
www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires.

No matter how good she looks, somebody, somewhere, is tired of her sh*t.

Beauty is skin deep, ugliness goes clear to the bone.
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handsofstone View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote handsofstone Quote  Post ReplyReply Direct Link To This Post Posted: 27-December-2018 at 12:08PM
That 18" trailer should be a breeze to pull. 😉

That's all I got.
-John
72 GTS S Code

2015 Super Cab F-250
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