Author Topic: 1984 c10 sagging tailgate  (Read 2273 times)

Offline 88rxna

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1984 c10 sagging tailgate
« on: April 18, 2020, 09:35:48 PM »
1984 c10 passenger side tailgate sits at least an inch lower than the driver side..
i have tried to adjust the hinge and latch as much and possible and this really didn't do anything to help..
im wondering what else i can do/ rebuild for the tailgate? i know for sure its the tailgate and not just the bed that's sagging.
any help is appreciate!
1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline FlatBlack77

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Re: 1984 c10 sagging tailgate
« Reply #1 on: April 18, 2020, 10:08:06 PM »
I cant imagine how the tailgate can sag an inch on one side and still have clearance to close. Unless the bed sides arent level

Take some pics.

Is anything bent?
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'77 C/10 - 350/350 mild street motor

Offline VileZambonie

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Re: 1984 c10 sagging tailgate
« Reply #2 on: April 19, 2020, 06:31:39 AM »
There are 3 different hinge designs that bolt to the bedside. Was it ever right or did it just start sagging? If you have the period correct gate, it sounds like you should get a new set of hinges. They bolt on to the gate and the bedside for your truck so replace them as a set.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline 88rxna

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Re: 1984 c10 sagging tailgate
« Reply #3 on: April 19, 2020, 03:49:49 PM »
I bought it last summer like this. I am not too sure if its the correct year or even the original gate for the truck.

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1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline VileZambonie

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Re: 1984 c10 sagging tailgate
« Reply #4 on: April 23, 2020, 02:43:32 PM »
Take the gate off and inspect the hinges and trunnions. If they look okay, try adjusting the passenger side hinge upwards.
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              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Mike81K10

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Re: 1984 c10 sagging tailgate
« Reply #5 on: April 25, 2020, 08:23:10 PM »
I believe it is your passenger side tailgate trunnion, your latch (lock) appears to be rubbing low on the hole. Trunnion problem could be on the tailgate or the bed. Noticed the gap on the left and none on the right from it leaning. The tailgate supports are probably keeping the tailgate aligned just enough for the tailgate to close.
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Offline 88rxna

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Re: 1984 c10 sagging tailgate
« Reply #6 on: April 29, 2020, 08:54:26 AM »
Thanks all. Maybe I should just get new ones? I tried adjusting them as far as they could go and it really didnt help at all

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1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E

Offline VileZambonie

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Re: 1984 c10 sagging tailgate
« Reply #7 on: May 01, 2020, 10:55:31 AM »
If it's that far off the mark, someone probably put the wrong year hinge on.
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline JohnnyPopper

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Re: 1984 c10 sagging tailgate
« Reply #8 on: May 01, 2020, 01:13:59 PM »
If it's that far off the mark, someone probably put the wrong year hinge on.

You could take them off and compare. VZ's pry right.
1957 Apache 3100 235 Inline 6, 3 on the tree
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1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline 88rxna

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Re: 1984 c10 sagging tailgate
« Reply #9 on: May 13, 2020, 07:08:15 AM »
Thanks, ill try it and see.

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1984 custom deluxe C10
4.8 sloppy stage 2 cam with springs
s480
xmax terminator
4l80E