Posted by the tractor vet on August 01, 2021 at 12:00:20 from (108.220.145.239):
In Reply to: Mileage question posted by rrlund on August 01, 2021 at 07:16:45:
What i have found over the years is finding the sweet spot of said engine . NOT ALL ARE THE SAME . Case in point here . People always said that the 460 sucked gas . Well i Bought a well used and abused 88 Ford F 350 4X4 cab and chassis , five speed , 4.10 gear and ex Oil Field refugee that had ISSUES big time . Being and ex master Ford tech and the mind se that i can FIX it . Got it all fixed up built a flat bed for it and ended up with a truck that weighed in at 7500 on the button , a rolling INGOT . I know all the tricks to make a 460 run and shell we say i enhanced it . I used this truck to drag my 28 foot goose neck to all the sales i went to not all the time as sometimes my buying habits exceeded my hauling capability . I kept track of mileage and fuel empty truck i could get 14 out of it empty trailer 12.5 13 full load 10-11 . she held right around 39 gallon of gas with dual tanks . Lets say i was just going to tri greens sale and i ran 55-60 out on the open road once i got to the four lane and i had basic non stop driving other then two traffic light on the four lane i had stop and go from the house for about 32 miles then once i got off the four lane till i got to the sale i had Delaware and Plain City to run thru . It would take almost one tank of gas for the 187.4 miles between my drive way to Tri Greens gate i had maybe two or three gallons left . Now say i was going to Stilesville In. that was 389.7 miles . On that ride i would run the same way as going to Green's but then jump on I70 and head west , usually about a bit west of the farm sincense review i would switch tanks , at Mt. Comfort IN. i would stop and fill up and this way i could run to the sale then make it back to London O. and refuel there for the ride home . One morning i over slept as i was hammered and shot out of bed no time to run th 7 miles out to the shop and get the trailer got to Go , That day we were NOT running the speed limits I knew that if i ran out 62 and thru Alliance that at that time of the morning only one traffic light was not blinking and little to no traffic the 460 was hauling mail . Out to I && down to US 30 west bound hammer down out to 71 down to US 42 down past Greens on to I 70 and i am flat up and flyen left lane just ah getting it still half asleep not thinking that i had not flipped the switch to switch tanks . I was half way across In. almost to Mt. Comfort when i looked down at the gas gauge and she was bumping empty and i happened to look at the switch and it was still on the ft tank , i thought this can't be right i must have been running on the back tank so i flipped the switch and the gauge went back up to full So i flipped back to ft and kept on going i saw a Bronco II up ahead of me and blew past it like it was parked and it was Dick Green that is who i thought is was when i saw it as we were coming into the east side of indy. as i was going past the airport on the west side the 460 coughed and sputtered as the ft. tank ran out of gas and i made the switch . That day is when i figured out how to run a 460 and get super gas milage out of it IF and again i say if i could keep it Buzzen above 3200 Rpm and up to 3800 it used less . While pulling the trailer empty or loaded i never ran fifth gear and the engine was always working in that 32-3800 rpm range , that put it between the peak torque range and peak horse power of the cam . One of the things i did with that engine was set the cam back to PRE 1971 cam specs as the cam was the same cam as when they first came out just the timing gears were changed and a new Cloyes double roller set took care of that along with a computer out of a 92 460 five speed . With that truck it was the faster ya drove it the BETTER the mileage , loafing along in fifth at 55-60 it was struggling , but when ya had the trailer on and you were running 32- 3400 it ran somuch better and my mileage went up . Only time it really sucked was the night i drug home a Gleaner K combine with both heads and made the mistake of Pulling the combine on forward . From Plymouth in to Ft. Wayne east side it sucked 37.5 gallon and would not go over 55 flat on the floor . At the little fuel stop i filled up and was setting there thinking on where i was going to have to stop for gas as at night out that way gas stops are few and FAR between and i really hate walking . So i backed it off and then backed it on . WOW what a difference it made , the long pull out of Ft Wane to Van Wert i did not know it was back there and made it home with 3/4 of a tank left. and once east of I 71 you get into HILL country with the first big one about two miles east of the I 71 Us 30 interchange that will even suck a big horse down and i have five more to the house .I ran that truck just shy of 300000 miles on the same engine with one clutch and one rearend .
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