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Author Topic: Need help Identifying my model year!  (Read 2720 times)

Offline GregLloyd1

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Re: Need help Identifying my model year!
« Reply #15 on: December 28, 2019, 08:34:12 AM »
Here’s the rearend/bed



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Offline GregLloyd1

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Re: Need help Identifying my model year!
« Reply #16 on: December 28, 2019, 08:36:36 AM »
I haven’t torn the carpet up yet to know if the high beam was originally floor mounted, but this trucks wiring can’t be trusted lol the guy basically spliced and rigged all the wiring! None of the dash instruments actually work correct. There’s tons of wiring unplugged in this thing.


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Offline VileZambonie

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Re: Need help Identifying my model year!
« Reply #17 on: December 28, 2019, 08:47:32 AM »
There's a million of these trucks out there with cab swaps where the vin plate moves to the new cab. You will just need to go through and undo the butchery but you can fix it. If you want to keep the 84 clip just source interior parts for the 84 dash.
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline VileZambonie

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Re: Need help Identifying my model year!
« Reply #18 on: December 28, 2019, 08:48:35 AM »
Also a new wiring harness is available and can often be the best solution.
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              `()_);-;()_)--o--)_)

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

Offline GregLloyd1

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Re: Need help Identifying my model year!
« Reply #19 on: December 28, 2019, 08:51:34 AM »
I’m doing a LS swap so i planned on rewiring the tragedy rats nest that’s in it lol. So we are thinking it’s an 84’ cab with the original 79’ dash frame? Or it’s a 79’ cab retrofitted with 84’ front and doors?


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Offline VileZambonie

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Re: Need help Identifying my model year!
« Reply #20 on: December 28, 2019, 11:16:25 AM »
From what you have shown, it appears to be an 84 cab and front clip with a VIN tag swapped over.
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              ⌠¯¯¯¯¯'   [☼===☼]
              `()_);-;()_)--o--)_)

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

Offline GregLloyd1

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Re: Need help Identifying my model year!
« Reply #21 on: December 28, 2019, 01:22:01 PM »
How would i be able to confirm that possibility? I checked the cab-frame mounts and they are the 79’ mounts. I can’t confirm what radiator support mounts bc they are in terrible shape!

Would anybody be willing to take a picture of radiator supports and your VIN plate (cover the vin numbers)?

Again thank you guys for the effort, I know this has been annoying.


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Offline Irish_Alley

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Re: Need help Identifying my model year!
« Reply #22 on: December 28, 2019, 02:31:40 PM »
you have to use the 79 mounts when swapping cabs. the 79 should have 13 digits in the vin while the 84 will have 17 this should mean the 84's vin plate is longer than the 79. if the holes in the vin plate match up perfectly and the rivets still look OEM (have flat sides not the typical round ones) called "rosette rivets". another possibility is that the dash itself was cut out and rewelded
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline GregLloyd1

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Re: Need help Identifying my model year!
« Reply #23 on: December 28, 2019, 02:57:12 PM »
Thank you, that gave me my for sure answer I appreciate it


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