Cab swap

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SmokEaterHD

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Mar 11, 2017
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Location
Missouri
First Name
Chris
Truck Year
1975
Truck Model
K20
Engine Size
355
I’ve been working on my ‘75 K20 a bit and am noticing the horrible patch job one of the previous owners did on the floor. Literally welded 1/4” flat stock to the floor and spray foamed the rest. So I was gonna just cut the whole floor out, rocks, cab corners and the metal split at the bottom of the back of the cab and fix it all. However, I came across another ‘75 K20 that is complete except for the bed and drivetrain. Guy wants $250 for it and says cab is solid, but doesn’t have a title. Which if it is as solid as he says would be cheaper than trying to patch mine together. How does that work? You can’t just swap VIN tags off the cab and still be legal correct? I’m hoping to get a good cab, some interior pieces that are missing, and maybe see what’s in better shape on the other frame that I can swap to mine such as spring hangers, etc. Then just scrap the rest. I’m in Missouri if that makes a difference. Thanks.
 

HotRodPC

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OKC, OK
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HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
Here's how that works, Do what you gotta do, keep your mouth shut and let's delete this post. You won't be the first. Keep in mind, DO NOT REPLACE THE RIVETS. You need to keep and use the same rivets. Your VIN tags are on the door post right? I don't recall for sure where it is for a 75 but I know it's not 17 digits.
 

DanMcG

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Location
Central NY
First Name
Dan
Truck Year
1978 1985
Truck Model
k10 k10
Engine Size
400 350
Last edited:

shiftpro

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Location
BC Canada
First Name
shiftpro
Truck Year
73-87
Truck Model
1500, 2500, 3500
Engine Size
350, 383, 454, 496!
You can buy rosette rivets online.
 

theblindchicken

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Oct 24, 2013
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Location
SoCal
First Name
Christian
Truck Year
1974
Truck Model
K10 5" lift + 2" BL
Engine Size
350-4, 0.030" over
I believe the vin is on the driver's door post. Also on top of driver's frame next to the steering box.
 

Big Chip

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Location
Michigan
First Name
Kevin
Truck Year
1979
Truck Model
C35
Engine Size
454

roundhouse

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Location
atlanta ga
First Name
justin
Truck Year
77,78,79,80 ?
Truck Model
K10
Engine Size
350
I have a truck square with all the numbers ground off of everything
None on the engine. Trans frame or body

Has a state issued VIN plate Riveted in the door post , came with a title that had the state Issued VIN on it

Unless it’s done to facilitate some type of fraud or theft I wouldn’t worry about it

Just don’t talk about it
 

Lostranger

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Location
Marion, NC
First Name
Jim
Truck Year
1987
Truck Model
R30
Engine Size
350
I've done cab swaps on several GM trucks through the years. I transferred the ID plates to new cabs and never had any problem in NC. YMMV
 

Lostranger

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Marion, NC
First Name
Jim
Truck Year
1987
Truck Model
R30
Engine Size
350
One of those cab swaps was a 67 GMC onto a 73 Chevy 3/4 ton. I had a title for the 67 but not for the 73. Kept the ID plate for the 67 and titled the composite as a 67. Was no problem.
 

idahovette

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Location
Weiser Idaho
First Name
Perry
Truck Year
1975-1979
Truck Model
K20-K10
Engine Size
350
I have a truck square with all the numbers ground off of everything
None on the engine. Trans frame or body

Has a state issued VIN plate Riveted in the door post , came with a title that had the state Issued VIN on it

Unless it’s done to facilitate some type of fraud or theft I wouldn’t worry about it

Just don’t talk about it
Last sentence is all you need to know!!
 

75gmck25

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Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
Before you get carried away with a stealth swap, I would call the DMV and ask what it takes to do it legally. Sometimes it is not that complicated a process, since your goal is to keep the VIN you have for your truck. You just happen to be swapping in a new cab, which is where the VIN is located.

Bruce
 

shiftpro

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Location
BC Canada
First Name
shiftpro
Truck Year
73-87
Truck Model
1500, 2500, 3500
Engine Size
350, 383, 454, 496!
The Black book value of these trucks is only worth a chicken sandwich so it's pretty tranquil.
And don't brag about it (except here hehe).

I've also discovered is really easy to change the vehicle 'details'. "Oh it says 2wheel drive but that's a mistake somehow, it's 4x4". Done.
"I painted it, it's now blue."
"Oh I forgot last time I renewed, I took the dual wheels off it's not a dually anymore."

At least here where I live.

Still have to get an inspection to insure a vehicle from out of province.
 

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