swb to lwb bed interchange help

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DRCKISS

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Sep 20, 2021
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alabama
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james
Truck Year
1985
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c/k10
Engine Size
5.7
i just purchased a 75 K10 LWB without a bed and my wife suggested she would like a SWB stepside bed, is it possible with out too much fabrication? or would i get luck and just be able to bolt it in? i found a SWB bed, i was just wanting the group ideas and opinions first


TIA
 

Scott91370

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Burleson, Tx
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Scott
Truck Year
1985
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Sierra1500
Engine Size
350
You have ot cut somewhere around 16" out of the frame of the longbed (just behind the cab) and another like 4" off the rear of the frame for the shortbed to fit.
Then you have to adjust your brake lines (hydraulic and parking) and driveshaft.
Wiring can be looped.
You'll also need 16 gallon fuel tank(s). But I don't think the fuel lines need to be adjusted.
 

TotalyHucked

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Bennyt

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C10
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While scary to cut your truck in half, its actually a fairly easy job. If you look at my build thread, you can see where my 15yo did it with no experience with cars, tools, women, etc. and my neighbor and I welded it all up. Just don't rush it.

Rather than make your own or z the frame, buy the conversion brackets.

Metalox sells/ manufactures brackets and he has probably shortened more than anybody out there. He has videos for sale that walk you through it.
Other vendors are the brothers above, but I used the brackets from "Built by Brooks". You can find him on instagram. His brackets are longer, heavier and tie in to the front spring mount as well.

I believe the kits tell you to cut 6" off the rear of the frame to match the swb frame dimensions but you can cut less. I believe I only cut 5" as I want as much frame for protection as possible as my gas tank is mounted in back.
 
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