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460 MPG
#1
Anyone with a stock 460? I know they didn't come stock, I mean just a basic build 460. What's your fuel milage? I'm hoping to hear numbers in the 16s but not holding my breath.
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#2
Found this on another site

"I have a 1978 460 in my '32 pickup. Stock pistons and heads but Performer cam, intake and 750 carb. It's snappy enough for me since the truck is basically a cruiser...but it has never seen a gas pump it didn't like. I average 12.5 mpg and that's with a 2:73 rear gear. So keep your credit card handy. "
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#3
Not too bad considering a Mack Truck averages about 5 MPG!

[Image: 1gq8uo.png]
1971 Mach 1 - 306cid/C4 Bright Yellow
"Just relax, I've got a friend named Felix who can fix anything!" ~James Bond
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#4
What's a 32 pickup weigh? Gotta be more than a 72 mustang.
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#5
I would guess the 32 would weigh less, but just my guess...
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#6
460 and MPG that's funny stuff I don't care who you are.
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#7
466 a little warmed up with a 870 carb, single plane intake, 274xe cam, tko600 trans,3.89 gears (really low for a 460) and a short 25.7 tire.

i posted a few months ago i averaged 10.57MPG driving to work everyday for a week and messing around town. i did some constant 50-60mph driving and some top n go with some hotrodding. not too bad i guess.

i did the same thing with more tuning with my dizzy/timing and the jets and just some replacement of old ignition parts. i also ripped out the MSD for my old duraspark II ignition and with alot more hotrodding and some constant 50-60mph cruises to work i got 11.5mpg.

on a constant highway drivin @70mph 2300rpms, i bet i'd get about 13mpg maybe. but i'm also ditching my single plane intake for a high rise dual plane and ditching the super lean 870 street avenger for a 800DP here very shortly. so the smaller carb and a dual plane intake, might help some and especially in the under 6000rpms powerband i got.
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#8
I have a warmed over 460 in a car that weighs about 4000lbs. The fastest thing on it is the gas gauge. If you are truly concerned with fuel mileage then fuel injection is the way to go but you would have to drive the car a lot to see any payback on your investment in a reasonable period of time. The next best option would be to run a quadrajet. To do this on a stock or standard Edelbrock Performer manifold you would have to run an adapter. If you can run an original CJ or Edelbrock Performer RPM manifold a qjet will bolt right on. However neither of those manifolds are suitable for a bone stock post 1971 460. I played with a qjet for over a year and while I never checked the mpg I know it was much more fuel efficient than the double pumper I am running now. The performance wasn't bad either but I did a lot of mods to the carb.

For me fuel efficiency is more about the way I drive than what's under the hood.

73 conv. 460, D0VE large valve heads, Performer RPM manifold, Voodoo 227/233 cam, Holley 950 HP carb, C6 trans, 3.25 trak-loc.
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#9
I have my 532, c6 and 4:30 gears. I need to get the adapter for my gear set because my speedo Is way off but I got 150 miles from full to empty (roughly) driving only to vollyball on thursday nights exactly 30 miles there and back. I have a stock fuel tank. keeping up with traffic on a 55mph road turning 3100rpms.

I think with a good tune a guy could get 15, most fuel injected 460 pickups average 10 with over drive in a 6000lb truck. Id say get overdrive! I'm saving for a 6 speedSmile

Cody--
72 Mach-1 12:1 532 Forged internal Scat stroker, Kaase P51 heads, Comp roller cam, March serpentine conversion, C6 manual VB, 9'' 4:33:1.
66 convertible 289, 82k miles.
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#10
If you're concerned about MPGs why in hell are you considering a 460????
Even a 302 has to be conservatively driven to get 16.

1971 Mach1
351C-4v
C6 is history-->>now TKO-500
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