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Rainman Ray explains the one-ton front spacers [message #371101] Mon, 27 February 2023 22:05 Go to next message
RF_Burns is currently offline  RF_Burns   Mexico
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Ray explains the purpose of the front wheel spacer on dual wheel one-ton truck/vans. It starts about the 6:00 minute mark in this video where he is working on the front brakes of a one-ton dually Ram pickup. The GMC motorhome uses dually wheels hence the one-ton front end needs the spacer to place the wheel correctly to the hub.

https://www.youtube.com/watch?v=656oCsmclxY

Case closed.




Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Re: Rainman Ray explains the one-ton front spacers [message #371214 is a reply to message #371101] Sat, 11 March 2023 18:31 Go to previous messageGo to next message
Steve is currently offline  Steve   United States
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I watch Rain Man Ray every day. He is really good.

1978 GMC Royal
Eastern Pennslyvania
1968 Chevrolet C20 396 Camper Special
1969 Chevrolet C20 Camper Special
1985 Buick Electra Park Avenue
1992 Camaro 25th Anniversary Heretage Edition Black
Re: Rainman Ray explains the one-ton front spacers [message #371215 is a reply to message #371101] Sun, 12 March 2023 23:05 Go to previous messageGo to next message
rickmike is currently offline  rickmike   United States
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RF_Burns wrote on Mon, 27 February 2023 23:05
Ray explains the purpose of the front wheel spacer on dual wheel one-ton truck/vans. It starts about the 6:00 minute mark in this video where he is working on the front brakes of a one-ton dually Ram pickup. The GMC motorhome uses dually wheels hence the one-ton front end needs the spacer to place the wheel correctly to the hub.

https://www.youtube.com/watch?v=656oCsmclxY

Case closed.
If the stock GMCMH knuckles and hubs were designed for non-dually wheels as the pickup truck's were, the GMCMH would require spacers.

Alas, the GMCMH hubs were designed for the dually wheels and therefore spacers push the wheels out too far and cause a large increase to the scrub radius, which is bad.

Rick M.


1974 26' Canyonlands aka "The General" Clinton, TN
Re: Rainman Ray explains the one-ton front spacers [message #371216 is a reply to message #371101] Mon, 13 March 2023 00:43 Go to previous message
RF_Burns is currently offline  RF_Burns   Mexico
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Registered: June 2008
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Senior Member
Rick,
I should have been clearer. I was referring to the one-ton front end upgrade that uses the knuckles from the one ton truck. These knuckles were designed for single wheels. When used on a dually pickup, the spacers are required to compensate for the additional offset of the dually wheels and place the tire track in the same position as the single wheel.


Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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