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8 lug hub differences? --PICS ADDED!!--

side note on this right here.


this is why 25 bucks per year membership is worth more than 25 bucks .

you noobs better learn somthin from this one right here. :popcorn:
 
So someone machined the 3/4 ton rotors to fit the 1/2 ton caliper brackets? Thats a good idea :thumb:
 
GreenieK30 said:
So someone machined the 3/4 ton rotors to fit the 1/2 ton caliper brackets? Thats a good idea :thumb:
Click to expand...

Not sure why they machined the diameter since the 8 lug caliper bracket still has a different offset to corrolate with the height difference of the rotors between the 6 and 8 lug.

According to my info there is a 1/2" difference in height between a 6 lug and 8 lug rotor. (once again this measurement is from the rotor where it meets the hub to the rear pad side of rotor).
 
i think someone tryed to run 1/2 ton size brakes on 8 lug stuff. but didnt want to grind calipers or get the pricy custom caliper brackets.

then when the stuff wouldnt fit thay gave up and sold it off and didnt say anything.
 
sweetk30 said:
i think someone tryed to run 1/2 ton size brakes on 8 lug stuff. but didnt want to grind calipers or get the pricy custom caliper brackets.

then when the stuff wouldnt fit thay gave up and sold it off and didnt say anything.
Click to expand...

That's pretty much what I said in post #28.
 
GreenieK30 said:
So it is a bad idea :thumb:
Click to expand...
You would need to customize the backing plates to move the caliper over 1/2". But the swept surface looks narrow on those turned rotors. And the pad might hit the rotor hat. Plus you have to customize every rotor you buy. Maybe grinding the caliper is a better idea.
 
So I was able to get to the bone-yard today and get the proper backing plates. After bolting them on the rotors and calipers lined right up. And 4x4high is correct on the backing plate offset...the 3/4 ton backing plate has more offset than the 1/2 ton backing plate. Thanks guys for all the help! Now I just need to work out the parking brake cables...

Kevin
 
Cables in the rear is simple.

1983 up to '91 all have a longer cable from the passenger side over to the driver side.

The '73 to '82 trucks all used equal length cables that mounted to a small L bracket by the rear spring hanger.

The simplest solution would be to find some drum brake backing plates from any 3/4 ton truck, '83 on up.

You can use either the FF or SF plates.

These '83 and newer plates use cables that are pressed fit into the holes. The older trucks use cables that are held to the plates with 2 bolts/nuts.

Simple solution. Contact the yard and ask for '83 and newer plates.
 
Another solution would be to contact a brake line company and have them custom make the passenger side cable longer. You will be able to retain your current backing plates for the year specific 14FF.

Good rule of thumb I go by: I try to swap parts out (like backing plates, in your case) to fit the year specific rig so when someone else (if you sell the truck) has to get brake parts later, they won't have the hassles of trying to figure why the new parts won't fit, etc.

Save the headaches from someone else. Make it easier on everyone. Get year specific parts.
 
I have looked at both ways of getting the parking brake working. I like the idea of using the correct backing plates. My axle is a '79. You say the FF and SF backing plates are the same for 14 bolts...I didn't know that.

Kevin
 
Yep, SF and FF plates are the same.......as long as you use 3/4 ton and not 1 ton.

If you use 1 ton plates, you will need to use 1 ton drums since they're wider at using a 3.5" wide shoe. The 1 ton plates recess back deeper to make up for the drum width. Just find some 3/4 ton plates and you're good to go.
 
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