Front bolt pattern change
Thread Starter
|
Elder User
Joined: Dec 2010
Posts: 600
Likes: 1
From: New Carlisle, Ohio
Front bolt pattern change
Before I drill the rotors, I know the 80-83 f100 is the 4.5 bolt pattern, will these bolt onto the 73-79 spindle? Or even swap the spindle, rotor, etc? Or is there anything out there that could bolt on be it 4.5 or 4.75 bolt pattern.
Thanks in advance.
Thanks in advance.
FTE Legend
Joined: Nov 2015
Posts: 30,935
Likes: 4,124
From: Angier, NC
I don't have an answer for you but here is what I found on the 80-83 disc's/rotors.
Back ground: I have 2 1981 F100's.
1-power brakes small bolt pattern (parts truck)
1-non-power brakes large bolt pattern (project truck)
Note the 2 size bolt patterns and the type of brakes each uses.
I have aftermarket wheels for the projecttruck large pattern I wanted to keep but the truck had frozen king pins.
The other truck had good king pins so I swapped suspension over to the project and was going to swap rotors for the right pattern, calipers are the same between the 2 trucks.
Well you cannot swap just the rotors as the spindles are different for the 2 types of rotors. IIRC the rotor hits the caliper bracket before the rotor is on all the way.
So with that said if you could find a rotor with the right bolt pattern they may not (thinking will not) fit the spindle.
My fix will be to replace the bad king pins so I can use the right spindles for the large bolt pattern rotors.
So if your year truck had both size patterns I am thinking the spindles may be different also.
Good luck
Dave ----
Back ground: I have 2 1981 F100's.
1-power brakes small bolt pattern (parts truck)
1-non-power brakes large bolt pattern (project truck)
Note the 2 size bolt patterns and the type of brakes each uses.
I have aftermarket wheels for the projecttruck large pattern I wanted to keep but the truck had frozen king pins.
The other truck had good king pins so I swapped suspension over to the project and was going to swap rotors for the right pattern, calipers are the same between the 2 trucks.
Well you cannot swap just the rotors as the spindles are different for the 2 types of rotors. IIRC the rotor hits the caliper bracket before the rotor is on all the way.
So with that said if you could find a rotor with the right bolt pattern they may not (thinking will not) fit the spindle.
My fix will be to replace the bad king pins so I can use the right spindles for the large bolt pattern rotors.
So if your year truck had both size patterns I am thinking the spindles may be different also.
Good luck
Dave ----
Thread
Thread Starter
Forum
Replies
Last Post
proford1
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
11
Jul 21, 2009 07:44 AM
gquinn8516
1948 - 1956 F1, F100 & Larger F-Series Trucks
3
Oct 31, 2003 05:46 AM
slammerz
1973 - 1979 F-100 & Larger F-Series Trucks
3
May 18, 2000 09:19 AM
