Rotors
Elder User
Joined: Oct 2004
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Yes, Im pretty sure they will. I think one time I got them mixed up and they worked just fine. Heck I even put a 14" car rotor on one time! Didn't notice till I was ready to put the wheel on and it was to small. I get to busy to notice the small things. LOL 
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by Old Tired Rebel
I have a 81 F100. I did a search on here to see if the F150 rotors would fit on the F100 Spindles?
Ford was promoting the then new F100's as a "light truck."
Full sized Ford passenger cars also have the 4.50 bolt circle, but the rotors have a different part number than the car rotors.
Except 1980-81-82-83 F100's---Every other Ford F100/150 from the 1940's till the wheels went metric in the 90's has a 5.50 BOLT CIRCLE.
Last edited by NumberDummy; Mar 26, 2007 at 12:56 PM.
Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
From what I have read, not necessarily all 1980-1983 F-100's got the smaller bolt pattern. There was an option package that gave you 5.5 wheels on those years. But that range was definitely the only time you could get the smaller bolt pattern on an F-series truck.
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Ok, assuming that Bill's right (and he usually is) then you'll need to pick up a pair of spindles from an F-150 from the junkyard.
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Post Fiend
Joined: Jan 2006
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From: North of Normal
OK thats what I will do.Will it have to be from a 80-83? I was told that Ford went to Ball joints after 83
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Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
There is no reference to a 1980/83 F100 using anything other than a 4.50 bolt pattern in the 1980/89 Ford Light Truck Parts Catalog. The catalog makes no reference to a 5.50 bolt circle available as an option. Every brake and some front end parts are specific to the 4.50 bolt circle.
You will need not only the spindles, but all the front brake parts to convert to 5.50.
andym: Where did you read that info about the 5.50 bolt circle?
I'm just a messenger here. I type what I read in the parts books, so please don't shoot the messenger if you disagree. Ford is HQ'd in Dearborn, point your SAA's that-away.
You will need not only the spindles, but all the front brake parts to convert to 5.50.
andym: Where did you read that info about the 5.50 bolt circle?
I'm just a messenger here. I type what I read in the parts books, so please don't shoot the messenger if you disagree. Ford is HQ'd in Dearborn, point your SAA's that-away.
Last edited by NumberDummy; Mar 27, 2007 at 03:48 AM.
Elder User
Joined: Oct 2004
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Nope, mine has never been changed and they are 5X5.5 patern. When I bought the rims for it, the guy at the place were i got them said "some f100 had the smaller bolt patern and some had the bigger patern, So I'll have to see the truck to price it" He knew about some having the bigger bolt patern. And I know the guy we bought the truck from (I'm the second owner) and he wouldn't have changed it for sure.
Posting Guru
Joined: Jun 2001
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From: Conyers
Here's what it is...the non-power brake trucks got the 5.5X5 pattern and the power brake trucks got the small pattern. No idea why, but every source I've found/junkyards prove/say the same thing.