F100 lug pattern.
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Freshman User
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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?
Postmaster
Joined: Apr 2008
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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...
Senior User
Joined: May 2008
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From: Surrey, B.C.
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.
My '80 F-100 has a 302, C6 auto, and 9" rearend. It has the larger 5.5" x 5 BP.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
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"
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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Freshman User
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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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Post Fiend
Joined: Jul 2004
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From: Northern California
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.
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.
Logistics Pro
Joined: Jun 2008
Posts: 4,990
Likes: 6
From: Florida
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.
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.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
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.
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"
Logistics Pro
Joined: Jun 2008
Posts: 4,990
Likes: 6
From: Florida
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"
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"
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.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
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).
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.