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11-25-2019, 03:08 PM
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#1 |
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Active Member
 Join Date: Jun 2017
Location: erie pa
Posts: 150
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rear leaf spring question
hello, i have a 68 gmc shortbed 2 wd with a leaf spring rear. the springs in it have 8 leafs (i think some were added) and they are 2-1/4 wide. i have a newer rear end in it and i had to use 2-1/2 u bolts and saddles. i would like to buy new leaf springs for the rear. my question is would i have to change the mounts on the frame to go with the easily obtainable 2-1/2" wide springs or is there a bushing that could be shortened?
thanks bryan |
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11-25-2019, 03:09 PM
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#2 |
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Registered User
Join Date: Mar 2014
Location: Tacoma Wa
Posts: 146
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Re: rear leaf spring question
Odd you say some were added, my 64 GMC has 7 leaves in its leaf pack and one has been removed.
Steve
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1953 3100 261cu in, sm420, 3.55 torque tube, omaha orange 1964 GMC 1000 series,custom, 305E, sm420 |
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11-25-2019, 04:41 PM
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#3 | |
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Active Member
Join Date: Jun 2017
Location: erie pa
Posts: 150
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Re: rear leaf spring question
Quote:
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11-25-2019, 09:07 PM
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#4 |
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Registered User
Join Date: Dec 2012
Location: Fort Thomas, KY
Posts: 290
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Re: rear leaf spring question
The truck probably had the G50 Heavy Rear Spring option. Check your SPID.
You can get replacement springs in 2-1/4" width from SDTruckSprings, but they probably won't have the G50 option. It would be a lot easier to buy those than replace the spring hangers. Why do you need new springs? There are measurements on the website that you can use to determine if they are out of shape.
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1972 GMC 1500 Super Custom, 383 Stoker, TH350 Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592157 Engine Thread http://67-72chevytrucks.com/vboard/s...d.php?t=592233 |
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11-26-2019, 09:19 AM
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#5 |
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Active Member
Join Date: Jun 2017
Location: erie pa
Posts: 150
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Re: rear leaf spring question
the bushings on the springs are shot and they are kinda pitted. im not sure i need the g50 option. my truck has no spid. there is no evidence of it on the glove box door.
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11-27-2019, 10:32 AM
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#6 |
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,202
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Re: rear leaf spring question
Say Bryan, questions; any chance you have a rear sport bumper? Also, is the hole in your frame for a rear bumper like this? Thank you
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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11-27-2019, 11:09 AM
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#7 |
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Active Member
Join Date: Jun 2017
Location: erie pa
Posts: 150
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Re: rear leaf spring question
i will measure when i get home. my truck came with no bumper i bought a sport bumper and brackets from gmc pauls. i have not tried to fit it yet. i moved the fuel tank back there and have a few things to work out first. heres a couple of pics of where i am with the build
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11-28-2019, 12:21 AM
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#8 | |
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Senior Member
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,202
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Re: rear leaf spring question
Quote:
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Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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12-23-2019, 08:08 AM
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#9 |
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Active Member
Join Date: Jun 2017
Location: erie pa
Posts: 150
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Re: rear leaf spring question
sorry it took so long to reply, yes it appears that is where the holes are located,
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12-23-2019, 11:08 AM
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#10 |
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Registered User
Join Date: Jul 2008
Location: Eastern Oregon
Posts: 2,309
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Re: rear leaf spring question
Contact Detroit Spring they can build you a proper spring and supply everything you need.
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71 C-20 07 Magnum RT AWD |
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