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**N2TRUX** · 03-13-2009, 09:54 PM

Measure the thickness of the rotor. If they are new, they should be 1" or 1.25" for HD.

03-13-2009, 09:54 PM	#44
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,023	Re: you want to change your 5X5 bolt pattern on 73-87 disc to 5X4.75 Measure the thickness of the rotor. If they are new, they should be 1" or 1.25" for HD. __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"