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09-13-2014, 11:54 PM
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#1 |
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Registered User
Join Date: Jan 2011
Location: Maryfield, Saskatchewan
Posts: 93
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Rear axel advice needed
Will a 14 bolt SF rear axel from a 1975 bolt up to a 1986 with the same axel? The right axel bearing went in the semi floater, in my 86 GMC 2500 4x4, and it looks like axel tube is ruined. I am having trouble finding a replacement axel except for one from a 1975.
Did GM make any changes in the axels or frame widths, shock mount locations, or any other areas that would be different between the two years? Can the axel tubes be repaired? Thanks in advance for any info!
__________________
My Addiction: 1969 Pontiac Firebird 1983 K10 RCLB Silverado 6.2L Turbo 1986 K25 RCLB Sierra 1990 V3500 CCLB Silverado 1995 K2500 RCLB Cheyenne 6.5L Turbo |
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09-14-2014, 12:08 AM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Big Valley. Alberta
Posts: 674
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Re: Rear axel advice needed
1/2ton & 3/4 ton used the same width spring perches,1 tons where different. Ive swapped semi float from 81 to 87 no prob. 75 should be the same too.
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1977 Chev C30 454/465/14ff DRW 1974 Chev C20.350/465/14ff " Rock n Roll ain't noise pollution" 
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09-14-2014, 01:17 AM
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#3 |
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Registered User
Join Date: Dec 2010
Location: Pittsburgh, PA
Posts: 1,009
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Re: Rear axel advice needed
They never put a 14 bolt SF in a 75, so it was more than likely swapped out of a newer truck anyway. It should work just fine. Even if it's a 14 bolt FF, it will still bolt up just fine if it's out of a factory 3/4 ton.
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Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400 
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