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General Category => Tech - Help Area => Engine-Driveline-Wheels-Tires => Topic started by: bridgepainter on December 10, 2019, 10:50:10 PM

Title: Rear Wheel Bolt Pattern Discrepancy
Post by: bridgepainter on December 10, 2019, 10:50:10 PM
I'm swapping the wheels and tires from my single cab 2001 HD to my 1994 crew cab conversion HD, done by Alton.  I'm swapping them because the set of wheels on the '01 are freshly painted and the tires are brand new.

The front wheels swapped over fine.  The rears, when I went to make the swap, do not fit.  The '94 has a rear axle bolt pattern of 10 x 8.5", and the 2001 has a rear axle bolt pattern of 10 x 7.25".  What gives?  What do I have to do to make these wheels fit these trucks?  Swap the rotor / hub assemblies?  Why are they different?

Frustrated as all hell.  Thanks in advance.
Title: Re: Rear Wheel Bolt Pattern Discrepancy
Post by: jd8420 on December 11, 2019, 12:32:42 AM
Sound like someone swapped in a rear axle from a newer Ford F450, F550 Dodge 4500 or 5500. Should be 10 on 225mm or 8.86" bolt pattern.
Title: Re: Rear Wheel Bolt Pattern Discrepancy
Post by: bridgepainter on December 11, 2019, 09:08:45 AM
Thank you for the insight. The axle housings look almost identical, the RPO sticker is worn off of the '94 but I'm pretty sure that they're both Dana 80s. Should everything else on these axles be transferable? As in, should I be able to swap the rotors / hubs between these two trucks so that I can keep the wheels? I'd like to get the nice matching set on the '94, I'm getting the '01 ready for sale.
Title: Re: Rear Wheel Bolt Pattern Discrepancy
Post by: jd8420 on December 11, 2019, 08:41:53 PM
I doubt anything is the same except the yoke, ring and pinion and differential. 3500HD's have very unique axles shafts that spline into the hub.
Title: Re: Rear Wheel Bolt Pattern Discrepancy
Post by: bridgepainter on December 12, 2019, 01:16:29 AM
That's rough.  Might just have to pony up for some U-bolts and swap the whole axles.  I'm less worried about having all of the nice shiny wheels and tires (although that is a plus) than I am about being able to properly rotate the tires, which I won't be able to do if they're different front and back.