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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

1990f350

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Old Jul 10, 2011 | 10:12 AM
  #1  
a500ponies's Avatar
a500ponies
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From: SUDBURY
1990f350

i just bought a rust free original paint 460 dulie fuel injection has 200klms on it and uses oil it smokes when i get on it theres no blow by but it runs poorly at 60klms it surges or misses and is a real pig on fuel the converter is gutted and the truck has a 2.5performance flo pro muffler on it i did the aircleaner mods with 3inch abs pipe that helped but im unhappy with the performance with the truck ..my 93 f350 7.3 gets 16mpg at 60mph what should i do put a 514 crate engine in the truck and have 500horsepower and 7mpg or does any one has some thoughts on the 460 i need ideas...i found a old 365hp tbird engine sheap...that mite work
 
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Old Jul 10, 2011 | 10:33 AM
  #2  
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ljsimmons
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I would check compression. and then the normal tune up items plugs cap rotor wires TIMING. How bad of mileage are you getting. If its around 8 mpg then thats about normal. I just changed from the c6 automatic to the zf5 manual and gained 4 mpg on the highway, went from 8-12mpg in a stard cab 250 4x4.
 
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Old Jul 10, 2011 | 01:19 PM
  #3  
FORDF250HDXLT's Avatar
FORDF250HDXLT
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From: Mi'kma'ki
find another 7.3l idi w/trans to set in there and double up her fuel economy like your '93 hey?
why would you even think about buying a 460 pig engine with today's fuel prices? at best,they can only get half what the diesel gets.
start to use them,and they get even worse.
 
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Old Jul 10, 2011 | 08:28 PM
  #4  
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a500ponies
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From: SUDBURY
yup 8on the hiway is all it gets my 93idi 7.3 gets 16 at 60mph why did i buy the truck its totally rust free with the original paint on it how much work is it to put a 7.3 in the truck i have a spare 7.3idi for my 93...but i just found a factory ford460 that was rebuilt with 1000miles on it for 500 ..if i put the 7.3 in the truck wouldnt a turbo off a power stroke work...
 
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Old Jul 11, 2011 | 01:03 AM
  #5  
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ljsimmons
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that swap is not worth it. You need an entire new fuel system, wiring harness, computer, Tranny, t-case, exhaust, wire up a glowplug light in the cab, possibly have drivelines modified, motor mounts, and im sure the list goes on. If you had a donor truck that is wrecked then maybe, but I wouldnt do it unless it was a completely custom project truck
 
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