Are there different calipers?

[raidmagic]

Originally Posted by shortstep60

They make two different drop spindles one for a inch rotor and one for a inch and a quarter rotor. looks like you need the inch wide rotor to make it work. Check the rotor you have now and see if it is a inch and a quarter if it is you need to get a inch wide rotor to make it work.

Ok mine are for the inch and a quarter rotors. I have them installed. So I need calipers for inch and a quarter rotors?

[red211]

You will need the wider calipers and mounting pins since they are longer. I found used ones at the local pull Your own part yard on several vans of later varieties. They are not hit on as hard as trucks and are the same up through 95 ish.

[Lil Loafer]

I am pretty sure that the 1 inch rotors started being optional in 1981 (someone correct me if I am wrong). Before that they were all 1 1/4 inches. If going to a part house just ask for calipers for a truck older than 1981 to avoid confusion of multiple rotor sizes for a year

[raidmagic]

Originally Posted by Lil Loafer

I am pretty sure that the 1 inch rotors started being optional in 1981 (someone correct me if I am wrong). Before that they were all 1 1/4 inches. If going to a part house just ask for calipers for a truck older than 1981 to avoid confusion of multiple rotor sizes for a year

You nailed it dude. Went by the "good" parts store in my town today and got it straightened out. 81 is the year they swapped to smaller everything which wouldn't be a big deal if I were using all the parts from that truck. Here is the difference in the calipers. Learned something new today too so that's good.