I've search and searched and now I'm just going to ask, lol.

Who has a 460 in their truck? I would really like to know what you are seeing for gas mileage (in a 48-56, 56 ideal). A whole lot effects it so please let me know what year the engine is, what it came out of and your transmission and rear gear /tire height. If you don't know that's fine, I'm just finding it can make a huge, huge difference on those variables as they are not all the same by a long shot. I've been seeing 8-25mpg with them, so I'm trying to figure this out before I buy parts, lol.


Thanks

 

i had a 460 in my old ford (77) and it had been cammed and a "straight up " gear set ..and worked hard still got 15 to 18 to the gallon ,do you really think it is gonna make much difference with that big truck of yours?? why not try diesel ??more torque longer life ..it's your truck what do you really want??

 

My truck is big, but it's actually lighter than what people think it is, least in the end. Be around 4,000-4,500#s. A 2011 F350 weighs 7800-8800#s.

If I could see 15-18 I would be quite happy with it. I've debated a whole lot of engines, thought I was going diesel for a while to, but in the end I've found living on a busy corner in a town with no noise laws has made me really dislike diesels. Plus the feel of a big V8 can't be beat. The diesels start loosing benefits pretty fast; initial costs, maintenance, and the higher cost of fuel means the mileage it gets isn't the same as a gas engine. (Around here it's about $3 for gas, $4 for diesel. If I get 15mpg with gas, after 10,000 miles it costs me $2000 at that price. If I get 20mpg in a diesel, for 10,000 miles at the higher price, it also costs $2000, even though I get 5 more miles per gallon) Plus where I live it can get pretty cold, diesels can be a real pain to get going in it.

The 460 seems about perfect, reliable, great power, torque, fun, ease of working on, easy finding parts, ect. The only downside seems to be the MPG, but I figure with the right set up it can be in the "good enough" for a daily driver, plus have all the fun of a 460 cubic inch engine. You know... :
1977 Ford 460 burnout - YouTube

lol

 

I have a 460, largest valves I can get (2.19/1.71), C9VE high compression heads (10.3 compression), 436hp at the flywheel, C6, 3.55 rear, with 28.68 tall rear tires (315/35/20), and think I get about 5mpg.

about 2560rpm at 60.

Sam

 

Also a 460 weighs 700+ pounds! 429's and early 460's are pretty good engines in stock form....but the later ones (80's) are slugs. Low hp smog motors....
JMO though...

 

yah , and don't forget ,,I did .. our gallon is bigger then yours and I think our miles are shorter...umm kilo-meters but I know the 429 was better then the 460 ..and a smaller carb ..a 650 was better then the 750 cfm for mileage ,,I really don't care what the milelage is .. I have two diesel Ford cube vans that work all week , my 54 'flathead V-8 sanity toy ..and the "mistress" my 740i BMW..gas is more important then beer, cigeretts ..football or that other stuff that stops me from haveing fun ...enjoy your toy ..

 

460, .030 over, 9 to 1 compression, Edelbrock Performer cam and intake and 750 carb, 273 gear ratio. 9 or 10 mpg but I can't keep my foot out of it!

 

I've owned several 460s. The ones in motorhomes, I won't even talk about mileage but they have all been good engines. The 77 F-250 extended cab pulling 3.54s thru a C6 would do between 12-16. The '90 F350 extended cab dually pulling 410 gears thru an E4OD would do 10 empty and less pulling or hauling. And I drive like an old man. Gear your vehicle to get your road speed at the peak torque of the 460 at about 2200 rpm. They were all stock, wheels, tires, etc.
Edit:
I got to thinking about the 77 and believe I may have confused that with another truck, after all, the '77 was many many trucks ago. What I said about the '90 holds.

 

I run a 460 every day in my work truck , the truck weighs 9000 as it sits . 8-10 miles per gallon pretty consistently . This is a 1988 efi engine .
If you are going to work the truck a diesel is the way to go .

 

Take a look at this website if you haven't already, it will make you want a 460 even more lol

460ford.com

One picture on that site showed a car doing an incredible wheelie at the drag strip and it only had 3.27 gearing. Granted it probably had a stroked BBF but still 460's are cool.

 

I had a 73 F250 with a 69 429/C6 and got 8-10 no matter what I was doing.

Then I had an 84 F350 with a 460/4 speed. That one got 8 regardless.

Fun to drive, but tough on the wallet.

 

I have a 460 with a ZF 5 speed in my 1952 F-7 but the rear axle are 513 gears ....:-)

 

73 460 block 12 1/2 to 1 compression,magnum 301 cam high dome race pistons,tunnel ram, dual 750 double pumpers, direct port nos, c6 ,426 gears 33 x 22 mickey thomsons...fuel economy....priceless..lol...about a little over 1/2 a gallon a second

 

Howdy,


If you can gear your truck fairly high. So that you'll turn around 1800 or so at 60 mph (or 65, what ever you want to cruise at empty)

You'll possibly see around 15 MPG since you're "light".

A big powerful engine doesn't automatically mean you're going to get terrible mileage. But having that big powerful engine, it's hard to keep your "foot" out of it.......

Get yourself a 460 and ZF-S5-42, S5-47 or a much newer EFI 460 + E4OD and you'll have that high final gear with a 5.83:1 2 speed rear and tall tires.....

My E4OD (all E4OD's) has a 0.71:1 final gear and locking torque converter.....(I think the ZF is 0.76:1) http://www.mackstrans.com/ZFID.html

The same computer that controls the EFI 460 will also control the E4OD.

BOTH the E4OD auto and ZF 5 speed manual transmissions were used all the way up to and including the F450 so they're more than strong enough.

The 460 was one of my choices but it was behind the 300 cu-in Ford inline 6.

If I used the "6", I was going to also use a ZF-5-speed.

I don't know if you're using the original 2 speed rear axle (with NO parking brake)........ but if you are, you'll still need a parking brake.

You can get a parking brake assy that will bolt to either the ZF 5 speed OR E4OD transmissions.

They were standard on earlier F450's that had the ZF or E4OD.

Your best choice might be to go to newer rear and front axles that more modern [disk] brakes (and a parking brake provision)

Any V-8 (other than a Y-block with Rams Horns) will interfere (or be very close) to your current steering box unless you move it.

That's why, if I wasn't using a Y-block, I would either be using a "300", a Cummins 6BT, or a DD 4-53T. (and down the road I may still switch to a 4-53T!!)



Cheers,


Rick

 

I have a 460 in my '85 F-250. The truck weighs 4710 pounds, has a C6 auto trans, 3.54 gears and the standard 235-85x16 tires. Gets 9-10mpg pretty consistently over the 20+ years I've had it. It has the OEM Holley 4 barrel on a Weiand Steath intake. Couldn't ask for a better runner. but it is a little costly to use as a daily driver for commuting or general errands. With an E4OD trans like the later model trucks were equipped with, I'm sure it could do better. I always thought about swapping the carb with an Edelbrock 600 and see it that would help, too, but it just never got high enough on the priority list to make it happen.