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

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  #1  
Old 05-30-2009, 09:40 PM
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F100 lug pattern.

Just bought a 1980 F100 custom and I've been told by 2 different sources that the lug pattern on this model is the same as a car. Is this true? If so, what wheels will fit? Mustang maybe?
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  #2  
Old 05-30-2009, 10:03 PM
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5 x 4 1/2 and yes, same as a lot of cars.
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Old 05-30-2009, 10:22 PM
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if your tag says 4700 gvwr it should be 5 on 4.5" same as mustang, ranger, crown vic, grand marquis, jeep wrangler (87-2005), jeep cherokee, cougar, exlorer, and sport trac
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Old 05-30-2009, 11:34 PM
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What they said. However, there is a catch - while all these vehicles GreyF100 mentioned use the same bolt pattern, they do not have the same wheel backspacing, and the center hole (for the hub) is also different. Just something to keep in mind when looking for new wheels, ya know...
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Old 05-30-2009, 11:41 PM
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I've seen this discussed here before and there are some F-100's with the larger bolt pattern. I don't remember what dictates if they get the small or large BP.

My '80 F-100 has a 302, C6 auto, and 9" rearend. It has the larger 5.5" x 5 BP.
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Old 05-31-2009, 06:37 AM
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all of the ford wheels carry a 4" backspacing which is the same as your trucks steel wheels, the jeep wheels have 5.25-5.5" backspacing
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Old 05-31-2009, 07:09 AM
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Passenger cars wheels will not clear the calipers on 1980/83 F100's with 5 lug, 4.50" bolt pattern wheels.

Not all passenger cars have the 4.50" bolt pattern wheels, either.

1973/78 full sized Ford/Mercury's & 1973/79 Lincoln Town Cars/Marks are all 5 lug, 5.00"

Some 1973/Torino/Montego/Cougar/Thunderbird/LTD II/Ranchero wheels thru 1979 are 5 lug, 5.00"

Mustangs from 1974 thru at least 1992 are 4.25" / Only the SVO's are 5.50"
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Old 05-31-2009, 08:47 AM
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Wow, I didn't expect so much info. Thanks ya'll. That'll help alot, and I'm sure I'll have lots more questions as this project progresses.
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Old 05-31-2009, 08:50 AM
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Just make sure yours is actually the 5x4.5, cuz my 1980 F100 had the 5x5.5 pattern.
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Old 05-31-2009, 11:09 AM
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and also Fordtruckman80 has an 80 F100 and he has the 5x5.5 bolt pattern. but i had an 82 that had the 5x4.5 bolt pattern easiest way to tell is measure.
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  #11  
Old 05-31-2009, 01:55 PM
81-F-150-Explorer 81-F-150-Explorer is offline
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As a general rule, but not 100% definative... but what my service manual says...

Most of the 1980-1983 F-100's with 5x4.5 have power brakes. 10" brakes
Most of the 1980-1983 F-100's with 5x5.5 have manual brakes. 11" brakes

Also remember that adding a power brake system to one of these trucks is very simple.
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Old 05-31-2009, 02:35 PM
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Quote:
Originally Posted by 81-F-150-Explorer View Post
As a general rule, but not 100% definative... but what my service manual says...

Most of the 1980-1983 F-100's with 5x4.5 have power brakes. 10" brakes
Most of the 1980-1983 F-100's with 5x5.5 have manual brakes. 11" brakes

Also remember that adding a power brake system to one of these trucks is very simple.
Well geez,my truck gets weirder and weirder each day.As nflfreak43 stated,I've got the 5 on 5-1/2 bolt pattern.However,I have power brakes,which goes against what 81Explorer said.I know I was told that I have HD Brakes,but i'm not sure if that dictates whether I have power or manual brakes.
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Old 05-31-2009, 03:52 PM
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Quote:
Originally Posted by fordtruckman80 View Post
Well geez,my truck gets weirder and weirder each day.As nflfreak43 stated,I've got the 5 on 5-1/2 bolt pattern.However,I have power brakes,which goes against what 81Explorer said.I know I was told that I have HD Brakes,but i'm not sure if that dictates whether I have power or manual brakes.
It doesn't really go against it, as there are exceptions as I stated.


Here are the Brake Specifications to explain it further. The larger brake system wouldn't fit into the wheels of the 5x4.5.

From the 1981 Service specification manual... FPS 365-322-81

------------------------------

F-100 4600/4700 with Power Brakes

Minimum Rotor Thickness: 0.81"
Lining Area inner: 8.28"
Lining Area outer: 8.35"
Lining Thickness New: inner: .032"
Lining Thickness New: outer: .295"
Wear Limit: 0.030"
Caliper Piston Diameter: 2.597"

-----------------------------------

F-100: 4600/4700 with Manual Brakes/ F-100: 5000/5150 / F-150 / Bronco

Minimum Rotor Thickness: 1.12"
Lining Area inner: 6.99"
Lining Area outer: 9.55"
Lining Thickness New: inner: .0342"
Lining Thickness New: outer: .246"
Wear Limit: 0.030"
Caliper Piston Diameter: 2.875"
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Old 05-31-2009, 04:28 PM
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Quote:
Originally Posted by 81-F-150-Explorer View Post
It doesn't really go against it, as there are exceptions as I stated.


Here are the Brake Specifications to explain it further. The larger brake system wouldn't fit into the wheels of the 5x4.5.

From the 1981 Service specification manual... FPS 365-322-81

------------------------------

F-100 4600/4700 with Power Brakes

Minimum Rotor Thickness: 0.81"
Lining Area inner: 8.28"
Lining Area outer: 8.35"
Lining Thickness New: inner: .032"
Lining Thickness New: outer: .295"
Wear Limit: 0.030"
Caliper Piston Diameter: 2.597"

-----------------------------------

F-100: 4600/4700 with Manual Brakes/ F-100: 5000/5150 / F-150 / Bronco

Minimum Rotor Thickness: 1.12"
Lining Area inner: 6.99"
Lining Area outer: 9.55"
Lining Thickness New: inner: .0342"
Lining Thickness New: outer: .246"
Wear Limit: 0.030"
Caliper Piston Diameter: 2.875"
So basically,aside from the truck being lighter,I can pretty much call my truck an F150.The only real difference I see between my truck and an F150 is the fact that my F100 is lighter,and can't tow as much.Correct me if i'm mistaken...

Oh and would anybody know off hand whether or not a longbed is rare on F100's?Alot of the F100's I see are shortbeds.
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  #15  
Old 05-31-2009, 04:59 PM
81-F-150-Explorer 81-F-150-Explorer is offline
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Quote:
Originally Posted by fordtruckman80 View Post
So basically,aside from the truck being lighter,I can pretty much call my truck an F150.The only real difference I see between my truck and an F150 is the fact that my F100 is lighter,and can't tow as much.Correct me if i'm mistaken...
Correct.

some, but not all F-100s use the same identicle parts as the F-150. As far as GVWRs are concerned there is only 100Lbs difference between the Largest F-100 (5150) and the lightest F-150 (5250).

Quote:
Oh and would anybody know off hand whether or not a longbed is rare on F100's?Alot of the F100's I see are shortbeds.
Longbed F-100s are more rare, as is shortbed F-150s in this time frame, 1980-1983, but both are out there, so to speak.
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Old 05-31-2009, 04:59 PM
 
 
 
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