Machining the front hub/rotor?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GEARBOXGARAGE · 05-02-2012, 02:50 PM

Just wondering how many of you guys have had clearance issues on the snout of the front bearong hub on the rotors? I ran into this problem with the BOSS 338 wheels and have seen a few pics of people turning down that area for clearance. I even talked this over with the guys from Billet Specialties when I ordered a new set of wheels from them and still had to turn back about .375" down to a 1.437" diameter. They said the wheel is made right according to there specs for the application. I see many of the two-piece designs (hub and rotor seperate) have a tapered hub for clearance.

gumbys10 · 05-03-2012, 09:12 PM

I had the same issue, just had to take a hair off the hub, I may have cheated and used a flapper disc on the grinder and took patience, but took it down a hair to get the wheels to slide over the hub.

Andy4639 · 05-03-2012, 11:33 PM

Same here. Boss 338 - 20" wheels. I was assured buy the wheel guys that they worked. Not!!!

They did the grinding themselves and it cost me nothing but a few more minutes at the tire store.

GEARBOXGARAGE · 05-04-2012, 06:44 PM

This shows how much I had to machine the hub even to fit the Billet Specialties wheels. The Boss wheels are still about an 1/8" from fitting against the hub face.

05-02-2012, 02:50 PM	#1
GEARBOXGARAGE Registered User Join Date: Sep 2011 Location: Sturgis, Michigan Posts: 509	Machining the front hub/rotor?? Just wondering how many of you guys have had clearance issues on the snout of the front bearong hub on the rotors? I ran into this problem with the BOSS 338 wheels and have seen a few pics of people turning down that area for clearance. I even talked this over with the guys from Billet Specialties when I ordered a new set of wheels from them and still had to turn back about .375" down to a 1.437" diameter. They said the wheel is made right according to there specs for the application. I see many of the two-piece designs (hub and rotor seperate) have a tapered hub for clearance.

05-03-2012, 09:12 PM	#2
gumbys10 Registered User Join Date: Aug 2010 Location: Regina Saskatchewan Posts: 213	Re: Machining the front hub/rotor?? I had the same issue, just had to take a hair off the hub, I may have cheated and used a flapper disc on the grinder and took patience, but took it down a hair to get the wheels to slide over the hub.

05-03-2012, 11:33 PM	#3
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Machining the front hub/rotor?? Same here. Boss 338 - 20" wheels. I was assured buy the wheel guys that they worked. Not!!! They did the grinding themselves and it cost me nothing but a few more minutes at the tire store. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

05-04-2012, 06:44 PM	#4
GEARBOXGARAGE Registered User Join Date: Sep 2011 Location: Sturgis, Michigan Posts: 509	Re: Machining the front hub/rotor?? This shows how much I had to machine the hub even to fit the Billet Specialties wheels. The Boss wheels are still about an 1/8" from fitting against the hub face. Attached Images



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