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

What have you done to your truck today?

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  #9196  
Old 02-21-2013, 01:26 PM
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I've got a C6 with 3.55 gears and I turn 2250 at 60, probably 2500 at 70-75 MPH with LT235/85/R16 tires.
 
  #9197  
Old 02-21-2013, 09:34 PM
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[quote=TheKirbyMan;12865996]I'm sure I did (I read a LOT of stuff on here), but it was probably more than 24 hours ago and I've slept since then. I sure wouldn't mind lower cruising RPMs on the highway.

Originally Posted by Switchfoot
I have a C6 and 2.75's and I run a tad over 85 mph at 3k rpm on LT235/75R15 tires.[/quote
Hmm. My speedometer is probably off a little. I have 225/70/15s up front and 275/60/15s out back so my RPMs are probably a little higher because of the shorter tires.

I can only guess what I'm running now, since after installing the MSD system I don't have a functioning tach anymore. I don't know whether it'd be more cost effective to get the adapter for $60 or just spend a little more and get an Autometer tach that will work out of the box.





Today if I can make myself sit down long enough to do it, I need to get a manual choke installed.
I am saying get the adapter Kirby. That way the factory tach is functional and not just some non functioning OEM features on your truck.
 
  #9198  
Old 02-22-2013, 10:54 AM
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Originally Posted by TheKirbyMan
You're doing 70 and only turning 2K RPM? What's your setup?
My 1986 F150 with 4 speed manual OD, 3.08 rear gears and 215/75 X 15 tires turns 2000 RPMs @ 70 mph. It has the 4.9L engine and does nicely with this set-up.
 
  #9199  
Old 02-22-2013, 11:04 AM
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My '81 F150 w/a 351M/ZF5 and 3.50 gears turns 2000 @ 65 MPH. Puts the M where it has enough torque to pull any hill.
 
  #9200  
Old 02-22-2013, 12:30 PM
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Aired up all four tires for the first time in almost five years. They had all come down to around 15psi. Now they're at a happy 35psi, and it looks like a 4x4 again.

I also removed the cut E-brake cable from the driver's side brake backing plate. Next time I'm at the junkyard I'll try and grab a replacement.
 
  #9201  
Old 02-22-2013, 01:54 PM
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Originally Posted by Fordzilla80
Aired up all four tires for the first time in almost five years. They had all come down to around 15psi. Now they're at a happy 35psi, and it looks like a 4x4 again.

I also removed the cut E-brake cable from the driver's side brake backing plate. Next time I'm at the junkyard I'll try and grab a replacement.
Only 35 PSI? my fronts are at 44 PSI and the rears 55 PSI lol.
 
  #9202  
Old 02-22-2013, 03:08 PM
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Fired up the truck for the first time in a week today. Fired up on first try. Got some major work to be done to the motor once I move to West Virginia here in two weeks. Don't know what yet to be honest. Starting a thread for it tonite when I have some down time at work tonight with supplied video.
 
  #9203  
Old 02-22-2013, 03:59 PM
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Originally Posted by FordFETruck
Only 35 PSI? my fronts are at 44 PSI and the rears 55 PSI lol.
You know, I just thought of something. I went by the door sticker PSI. But my door sticker has the info for an F100 4x2. I wonder if the F150 4x4 shares the same tire pressure?

Not to mention the fact that my current 31" Dunlops are a little bigger than the stock 205/75's the truck originally wore.
 
  #9204  
Old 02-22-2013, 04:08 PM
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My door tag says 44 PSI front and 65 PSI rear lol
 
  #9205  
Old 02-22-2013, 05:29 PM
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Originally Posted by Fordzilla80
You know, I just thought of something. I went by the door sticker PSI. But my door sticker has the info for an F100 4x2. I wonder if the F150 4x4 shares the same tire pressure?

Not to mention the fact that my current 31" Dunlops are a little bigger than the stock 205/75's the truck originally wore.
Just went through the entire list and they do share the same pressures.

With that said, there are some wheel and tire combos that have differing pressures. Some 41psi, some 50psi etc...

If you are using the same stock wheels, then use the psi marking on the safety certification lable, and/or whatever is on the tire, which ever has the lower PSI rating.

(you might be able to put a tire with a 100psi rating on your stock wheels, but the wheels itself may not handle it; Or you may put tires on stock wheels that will not handle the factory recomendations... )
 
  #9206  
Old 02-23-2013, 12:32 PM
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Originally Posted by 81-F-150-Explorer
Just went through the entire list and they do share the same pressures.

With that said, there are some wheel and tire combos that have differing pressures. Some 41psi, some 50psi etc...

If you are using the same stock wheels, then use the psi marking on the safety certification lable, and/or whatever is on the tire, which ever has the lower PSI rating.

(you might be able to put a tire with a 100psi rating on your stock wheels, but the wheels itself may not handle it; Or you may put tires on stock wheels that will not handle the factory recomendations... )
I plan to run a set of the factory 1977-1982 Five-Spokes with a 31" tire. Do the aluminum rims require a different pressure than steel?
 
  #9207  
Old 02-23-2013, 12:38 PM
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No, the aluminum rims run the same pressure as steel.
 
  #9208  
Old 02-23-2013, 03:43 PM
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In the last 18 miles I got approximately 7-9 MPG just driving around town ( I put 2.66 gallons back in, all that $10 got me), I guess I don't need to drive this thing for no reason lol. Last time I got 14 MPG but it was all in 2 trips to town, this time 18 miles was a lot of B/S going back and forth to the post office a mile away and to my grandpas house .2 miles away several times, short trips sure kill mileage in this thing.
 
  #9209  
Old 02-23-2013, 03:50 PM
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Originally Posted by FordFETruck
In the last 18 miles I got approximately 7-9 MPG just driving around town ( I put 2.66 gallons back in, all that $10 got me), I guess I don't need to drive this thing for no reason lol. Last time I got 14 MPG but it was all in 2 trips to town, this time 18 miles was a lot of B/S going back and forth to the post office a mile away and to my grandpas house .2 miles away several times, short trips sure kill mileage in this thing.
Not only will that kill mileage, but it will kill exhaust systems and oil. Doesn't heat either up enough to drive out the moisture.
 
  #9210  
Old 02-23-2013, 03:58 PM
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Hi! I'm back.....

Changed the oil in the truck, just been driving it as my commuter for work. No issues until recently when the ignition would cut out intermittently. There is a lot of slop in the key slot like the old owners had a heavy keyring hanging from it. But anyway, I can sometimes move the key just a hair and it will cut out and then back on. Does not happen very often, but very disconcerting. Never the same conditions either. What part wears out in the linkage between the ign cylinder and the switch on the column?
 


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