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06-13-2014, 11:10 PM | #1 |
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4x4 Front and rear axle different width question
Just blew up the 12 bolt rear end 86 GMC half ton 4x4 and found a replacement. My rig has a rear axle width thats about 3 1/2" narrower than the front. The replacement rear axle is exactly the same width as my front. Will the truck track differently in snow or mud?
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"Built- not bought" 1958 GMC 150 4x4 in progress 1980 K20- Restored 1985 K3500 Flatbed 58 GMC 4x4 build thread: http://http://67-72chevytrucks.com/vboard/showthread.php?t=557675 |
06-14-2014, 02:29 AM | #2 |
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Re: 4x4 Front and rear axle different width question
On a 4x4 the front axle is always a tiny bit wider,Why i couldn't tell you but its normal.
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06-14-2014, 09:39 AM | #3 |
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Re: 4x4 Front and rear axle different width question
Yes, i know that. I was just wondering if its going to make a difference in handling if they are both the same width.
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"Built- not bought" 1958 GMC 150 4x4 in progress 1980 K20- Restored 1985 K3500 Flatbed 58 GMC 4x4 build thread: http://http://67-72chevytrucks.com/vboard/showthread.php?t=557675 |
06-14-2014, 05:35 PM | #4 |
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Re: 4x4 Front and rear axle different width question
Yes, it may make a difference in that it may handle a bit better.
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1990 ¾ ton 4x4 Chevy Suburban -Cummins Diesel - 12 valve - factory rebuilt -6 speed bullet proof manual transmission - NV5600 -Gear Vendors Overdrive - HX35 Holset Turbo -NP205 iron transfer case -3.73 gears -2" Lift |
06-14-2014, 05:41 PM | #5 |
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Re: 4x4 Front and rear axle different width question
I have always wondered this also....
What did the replacement axel come out of ??? |
06-14-2014, 09:08 PM | #6 |
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Re: 4x4 Front and rear axle different width question
Its probably from a cab and chassis truck those used shorter axles then a normal pickup.
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06-14-2014, 09:32 PM | #7 |
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Re: 4x4 Front and rear axle different width question
But he said It was longer.... Or am I confused ?
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06-15-2014, 12:55 AM | #8 |
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Re: 4x4 Front and rear axle different width question
The newer GMT400 trucks had wider rear axles.
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1990 ¾ ton 4x4 Chevy Suburban -Cummins Diesel - 12 valve - factory rebuilt -6 speed bullet proof manual transmission - NV5600 -Gear Vendors Overdrive - HX35 Holset Turbo -NP205 iron transfer case -3.73 gears -2" Lift |
06-15-2014, 01:21 AM | #9 |
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Re: 4x4 Front and rear axle different width question
Is the new axle a 12 bolt also or is it something bigger?
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06-15-2014, 11:40 AM | #10 |
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Re: 4x4 Front and rear axle different width question
Yes some of the cab and chassis truck had a different frame width resulting in different perch widths. As far as track width, yes the front end was designed wider for better traction so the rear tires would get fresh turf to grab. As has been said a rear the same track width as the front should help it handle better and personally would not think it would matter for traction. (How often are you going to be going dead straight in mud or snow?
Matthew |
06-16-2014, 09:46 AM | #11 |
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Re: 4x4 Front and rear axle different width question
Actually, the guy I'm getting the replacement rear end mis-measured and its exactly the same width as the one in there now.
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"Built- not bought" 1958 GMC 150 4x4 in progress 1980 K20- Restored 1985 K3500 Flatbed 58 GMC 4x4 build thread: http://http://67-72chevytrucks.com/vboard/showthread.php?t=557675 |
06-17-2014, 01:40 PM | #12 |
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Re: 4x4 Front and rear axle different width question
Damn.... I was starting to have math class panic attacks again !!!!!!
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06-18-2014, 10:32 AM | #13 |
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Re: 4x4 Front and rear axle different width question
No, you won't feel any difference. I swapped in a 9.5" rear end with the same width as my front axle. I really can't tell any difference while driving. I'm maybe 1/2" wider in back than the front.....
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- Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L Last edited by Ski-me; 06-18-2014 at 10:44 AM. |
06-18-2014, 06:52 PM | #14 |
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Re: 4x4 Front and rear axle different width question
Really depends on your tire/wheel combo as well. I have 15x14 wheels, wut my fronts are 38x14 and rears 38x16 so my track width difference becomes non-existant. It is pretty badass having those wide meaty SOB's in the back.
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