Need help to identify knuckle. Bronco or F150 ?

[screamin reel]

Bronco is a 74 with front disc's.
I'm trying to figure out if it is a Bronco knuckle or an F150
I don't think disc's were an option in 74. or were they ?
Codes are 620169R and 620170L

 

[72Sport]

I thought I had a matched set off of 78-79. One has a part#620169R and the other had C37937L. Both were off of either a 78/79 Bronco or F150. Not sure which.

 

[mountain14er]

the stock 74 drum brake would be 6 bolts and a smaller diameter on the hole.

 

[SaddleUp]

Wrong question I think. It could be either one but can't be the original. The original knuckle would have 6 bolts for the spindle. The 78/79 Bronco and several F150's from the late 70's had a 5 bolt spindle which is what that looks like.

 

[screamin reel]

The reason I ask is I want to upgrade to this.
Complete Offroad 1 ton

 

[72Sport]

Your knuckles are definatley off of either a 78 or 79 Bronco or F 150. 76 and 77 have the tie rod a couple of inches higher than the ones in your pictures. The casting number on yours matches one of mine which was removed from a 78 or 79 F150 or Bronco. I have no 76 or 77 knuckles.

 

[screamin reel]

I'm hoping they are 78 - 79 Bronco or F150 so I won't need to buy a reamer.
I guess if I do the tie rod over, I will still need one though.
Thanks

 

[broncnaz]

I say 78/79 knuckles also. I would do a TRO swap on it. When I did my 78/79 knuckle swap I developed bumpsteer with the tire rod mounted under the knuckle. Although I do have a 2.5in lift.

 

[bigmuddy]

which knuckles

As said, they are either F-150 or 78-79 bronco knuckles. If they are from the 78-79 bronco you will also need to buy some camber shims. I have the same set on my 75 and need the shims to get the geometry right.

Ben