1964 F100 rotor swap

416Ford · December 09, 2019, 12:34:19 PM

I want to put 5 x 4.5 wheels on Vickie's truck and It currently has 5 x 5 bolt pattern. Is there a front rotor swap? A previous owner swapped out rear ends in the past. The rear end seams to wide for the truck so we may swap out for a little narrower one with a 8" or 9"

kb426 · December 09, 2019, 04:30:49 PM

As far as I can tell, everyone uses a 73-92 half ton front rotor. They are all drilled for 5 x 5.5. Short of redrilling for a different pattern, I think that's it. It takes a new master cylinder if you want do it all at the same time. People use a Ford of those same years but have mentioned the pedal pushrod is around an inch too long. Those rotors use sets 12 and 13 for bearings.

enjenjo · December 09, 2019, 11:04:54 PM

Give me some more information and I might be able to set you up. What year is the truck? Straight axle or twin I beam? It 5x5 correct, or is it 5.5x5?

416Ford · December 10, 2019, 08:00:31 AM

It is a 64 Frank with a Scarebird disc brake set up on it. Not sure what rotors they used but it has the I beam suspension.
I will get the gauge on the studs tonight to verify 5" or 5-1/2".

KB it already has power disc brakes.

enjenjo · December 10, 2019, 07:53:20 PM

Okay, I have something for you. It will take some minor modification. The rotor is from a 1971 Ford LTD. The wheel bearings to use are set 12 and set 13. I didn't look up a seal, but that's not a problem.

The Scarebird rotor is actually for a 95 to 99 Ram 1500. The OD is 11.610". The LTD rotor is 11.730" You may, or may not have to turn the OD of the rotor for caliper clearance. The LTD rotor is .020" deeper front to back than the Ram Rotor. So you might have to space the inner bearing out from the shoulder, but most likely not. Will that work?

kb426 · December 10, 2019, 08:07:00 PM

^^^^
That sounds real simple. I should remember this for the future.

Beck · December 10, 2019, 09:09:06 PM

Quote from: "416Ford"The rear end seams to wide for the truck so we may swap out for a little narrower one with a 8" or 9"

I know everyone loves the 9", but I'm a fan of the 8.8. My local salvage yards are full of Explorers. They have 31 spline axles, same as the 9". Posi units are common in them. The typical gear ratios are 3.73 and 4.11. They aren't really wide. It is common to cut the long axle side down to the same length as the short side. They come with factory disc brakes with internal drum parking brakes. They have your 5 on 4.5 spacing.

enjenjo · December 10, 2019, 10:46:25 PM

A good 9" for a 64 F100 is a late 70s Torino of Tbird. 60" or thereabouts. Explorer 8.8 is about 58"

416Ford · December 11, 2019, 07:57:25 AM

Quote from: "enjenjo"Okay, I have something for you. It will take some minor modification. The rotor is from a 1971 Ford LTD. The wheel bearings to use are set 12 and set 13. I didn't look up a seal, but that's not a problem.

The Scarebird rotor is actually for a 95 to 99 Ram 1500. The OD is 11.610". The LTD rotor is 11.730" You may, or may not have to turn the OD of the rotor for caliper clearance. The LTD rotor is .020" deeper front to back than the Ram Rotor. So you might have to space the inner bearing out from the shoulder, but most likely not. Will that work?

Quote from: "kb426"^^^^
That sounds real simple.

Can't I just weld something............ Or wire something. Those are simple for me.

416Ford · December 17, 2019, 09:19:23 PM

I was able to pull the wheels tonight.
Front rotors are 11-5/8" OD, rear seal is 2.6" OD and the rim center is 3-3/8"
My rims will fit a 3" center and should not have an issue with the rotors. I will not have in issue with the LTD rotor .020" deeper.

Looked at the rear and did some measuring.
Rear in the truck is 65-1/4" outside to outside of drum and the wheels would fit great with a 58-1/2" OS to OS min.
It is an offset rear and the spring perches are 40-1/2" C.C. perches are welded on by someone, not factory and are 7-1/2* off level.

I have an offset 9" on the shelf that is 56-3/8" flang to flang no axles in it at the moment. My perches are 40-1/8 C to C and they are at 10* I Think it wold be a good swap if i find the right axles.
Inner races are part number 51098

https://photos.app.goo.gl/UZ3VBk5GmLYWf4Xv7

416Ford · December 17, 2019, 09:25:46 PM

Quote from: "enjenjo"The wheel bearings to use are set 12 and set 13

How do I look this up Frank?

kb426 · December 17, 2019, 09:42:09 PM

Check this for bearing numbers:
https://www.rockauto.com/en/catalog/ford,1971,ltd,5.8l+351cid+v8,1130308,brake+&+wheel+hub,wheel+bearing,1672
You'll need to put that in the address bar.

enjenjo · December 17, 2019, 10:20:59 PM

The bearing numbers are not for the stock 71 bearings. The set numbers are Timken numbers for cones with the correct cup. SKF crosses directly.Federal Mogul are A12 ana A13. C/R is BR12 and BR13.

416Ford · December 17, 2019, 10:32:08 PM

Would the RAYBESTOS 6014R be the rotor for this then?

What are the thoughts on the narrower rear i have? I see the factory should have been 61-1/4" outside of axle.

enjenjo · December 18, 2019, 10:05:50 AM

Quote from: "416Ford"Would the RAYBESTOS 6014R be the rotor for this then?

What are the thoughts on the narrower rear i have? I see the factory should have been 61-1/4" outside of axle.

Yes that would be the rotor. 58" should be fine but be careful on rim offset that the tire doesn't hit the bed on the inside.