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12-04-2003, 12:02 AM
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#1 |
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Registered User
Join Date: Dec 2003
Location: albuquerque
Posts: 431
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question on leafs between 1/2 and 3/4 ton
I'm wanting to replace the suspension setup on my lwb gmc 3/4 ton with a 1/2 ton setup... I think I have the front figured out but I have a question or two about the rear.
1. Will the rear leafs from a swb fit? 2. Can I use the original heavy rear axle with the lighter springs until I find a suitable donor? 3. Is there any good site out there that outlines a 3/4 to 1/2 conversion? Thanks in advance! donovan |
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12-04-2003, 02:55 AM
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#2 |
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Registered User
Join Date: Jan 2003
Location: Corpus Christi, TX
Posts: 47
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Be sure to measure the rear spring leafs from eye to eye, as the 3/4 leafs might be 56" whereas the 1/2 leafs might be 52".
Chad
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1985 GMC K1500 350 700r4 NP208 3.73 |
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12-04-2003, 06:27 AM
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#3 |
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user # 2756
 
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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What year truck? 2wd or 4wd?
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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12-04-2003, 12:38 PM
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#4 |
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Registered User
Join Date: Dec 2003
Location: albuquerque
Posts: 431
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It is a 68 LWB 3/4 ton 2WD...
tx. |
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12-04-2003, 03:22 PM
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#5 |
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user # 2756
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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You'll need to use springs from a 67 or 68 as the 69 and newer are different. You could just remove a leaf or two. SWB/LWB would have the same length/centering pin location.
__________________
1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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12-04-2003, 05:10 PM
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#6 |
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Robert Olson Transport
 
Join Date: Oct 2002
Location: recent transplant to NC USA
Posts: 20,310
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ive done the reverse swap on the newer generation trucks.. the u bolts are different but if ya use the half ton ubolts with the half ton springs it works out fine
__________________
Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!! |
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