1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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  #1  
Old 05-24-2010, 12:41 AM
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Custom Truck

Hey guys i have a 1984 F250(kinda a F350 now). I put a 10" flat bed and a ford 10.25 dually axle with 4.10s on it. I also put a 1991 ford idi 7.3l with a banks turbo kit(c-6 auto still) . But my problem is that i cant really go over 55-60 mph cause the motor starts to run really hot like 210-230 and it revs like crazy
Anyway i was wondering about have a shop install a 5 speed or 6 speed trany in my mult year truck.





-Austin
altamont springs FL
 
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Old 05-24-2010, 09:04 AM
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Sounds like the clutch fan is not locking up, it should sound like a hurricane under the hood when it gets hot, if not, replace the clutch fan.

Why a 10 inch bed ... To carry a motorcycle??

-Enjoy
fh : )_~
 
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Old 05-24-2010, 10:40 AM
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10 inch bed is the problem .. working that IDI to much!! lol .. sry .. couldn't resist!!
 
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Old 05-24-2010, 08:22 PM
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well i checked my fan by reving the motor up and the air movement increased from the fan. i found a guy to convert it to a 5 speed for 1500 bucks at a trans shop should i go for it?
 
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Old 05-24-2010, 09:10 PM
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Originally Posted by number_7
it revs like crazy
Can you explain in numbers? RPMs?
 
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Old 05-24-2010, 09:17 PM
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4.10's with a diesel and no overdrive would rev high. my truck is screaming at 65 or 70 with those gears. An OD trans (ZF!) would be the ticket...I want one.
 
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Old 05-24-2010, 09:41 PM
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My bet is a bad clutch on the fan.

Is it a 2wd or 4wd.

I don't do automatics in trucks ... PERIOD! I dislike them mucho.

Diesel 4wd ZF5's are not cheap and hard to find, 2wd's are dime a dozen. At least around here.

IMO that's high for a 2wd, low for a 4wd.

However, for the headache, it could be well worth it, especially if they have all the factory components like drive lines, pedal assemblies, master/slave cylinders, cross members, etc... If they have to make up drive lines I would be wary, ensure they have the proper equipment to do them.

-Enjoy
fh : )_~
 
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Old 05-24-2010, 10:17 PM
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Alright well im going to go with the swap i mean ive called everywhere and everyone wants like 2500-3000 dollars so 1500 bucks aint to bad!!!!. Especially coming from a trans shop!! .


i really think that im reving the **** out of the motor and causing it to overheat. when i had 3.55 ratio in it the thing really never went over 170 unless i was screaming aroung 80-90mph!!!!(thats scary in a old truck BTW) P.s ill have some pics up in like two days.
 
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Old 05-24-2010, 11:38 PM
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I would make sure its a ZF that they are giong to put to put in there first.
 
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Old 05-24-2010, 11:49 PM
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Lightbulb

ok thanks for the info guy like i said ill have pics and ill update ya'll when i get it all done and yes ill make sure its the diesel trany thats going on lol!!!!
 
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Old 05-25-2010, 12:29 AM
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A Diesel can run on the governor all day and all night and never gain a degree or miss a beat, thats what they are made to do.

If it's over heating, you have a problem ... PERIOD!

230 degrees is really not that hot, the thermostat is 195 degrees, Diesels like heat to a point, thats what makes them run.

-Enjoy
fh : )_~
 
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Old 05-25-2010, 09:42 PM
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thanks festus i never tryed to run it at gov fir 5 mins or anything like that. well i did rev it up that high once and the heater core hose came flying off the block lol (untighted clamp oops) anyway How would i check the fan the right way and how and i hook up one of those techs you can buy from the parts store like autozone
 
  #13  
Old 05-26-2010, 09:56 AM
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Hose clamps are made to be tightened to hold and prevent water leaks ...
(sorry just couldn't help myself)

I think this thread explains the Fan Clutch testing procedure: Clutch Fan Hub Test

If not let me know, I have another I can send you via email.

-Enjoy
fh : )_~
 
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