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#1 |
Registered User
![]() Join Date: Jan 2009
Location: marion nc
Posts: 588
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need help rear axle questions
man here in town has a 5 lug 12 bolt leaf rear axle for sale. he claims it come from a truck and i going to look at it. my 69 is leaf rear and i want to use it for my 5 lug swap. what are the differences from a 67-72 leaf rear and a 73 up? are they the same width from back plate to back plate? just dont want to buy something i cant use. thanks for any help
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69 short fleet 350/350 "under construction" 70 short step 307/3 speed |
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#2 |
Big Red - Now its a SWB!
Join Date: Jun 2009
Location: Oroville, Ca
Posts: 1,624
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Re: need help rear axle questions
I know that the leaf spacing is different between a 67-72 and a 73-?. other than that I think that the 73+ have a 10 bolt not a 12 bolt, that is easy to spot
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68 3/4 ton ![]() ![]() 41 3/4 ton ![]() 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's |
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#3 |
Registered User
![]() Join Date: Jan 2009
Location: marion nc
Posts: 588
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Re: need help rear axle questions
yea stuff like that. i can measure the distance on my axle between the leafs a check for a difference. i think i see a post were somebody said the leafs were different widths? anybody know??
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69 short fleet 350/350 "under construction" 70 short step 307/3 speed |
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#4 |
Registered User
Join Date: May 2009
Location: Eliot, Maine
Posts: 1,314
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Re: need help rear axle questions
do the mods mentioned above and you'd have the more modern 10 bolt rear under your truck. don't worry about a wider track width as the front is always wider anyway on a stock setup. especially on a 4x4 with the front wheels that stick way out, a wider rear would make it look more balanced.
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#5 | |
Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: need help rear axle questions
Quote:
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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#6 |
Big Red - Now its a SWB!
Join Date: Jun 2009
Location: Oroville, Ca
Posts: 1,624
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Re: need help rear axle questions
I didn't know that. Are they the same internals, axles,etc as the earlier ones?
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68 3/4 ton ![]() ![]() 41 3/4 ton ![]() 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's |
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#7 |
Registered User
![]() Join Date: Jan 2009
Location: marion nc
Posts: 588
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Re: need help rear axle questions
thanks for the responses guys. my truck is a 2wd if they was some confusion there. i have seen the replacement axles you can get from ECE but i can get this rear cheaper. does anybody know about the width of the springs?
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69 short fleet 350/350 "under construction" 70 short step 307/3 speed |
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#8 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: need help rear axle questions
I know on the heavier trucks there was more than one width of leaf spring.
Look at the shock mounts, if staggared, then it was certianly out of a later truck. |
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#9 |
Registered User
Join Date: Jun 2006
Location: Indiana
Posts: 4,859
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Re: need help rear axle questions
Same as the 72, but as LHM said, the shock mounts are wrong and the spring perches are or might be different.
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'70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60 |
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