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Which generation GM to build a sport truck?

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Old Jan 7, 2020 | 06:32 PM
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Default Which generation GM to build a sport truck?

Hi Everyone,

I'm thinking about building a sport truck for my next project. I believe that for my desires any generation I'm interested in will be a good foundation for a build. However, I didn't want to assume since I've never built a lowered truck before. I was hoping those of you that have been in this game for some time might share any wisdom you think I should be aware of so I can get started on the right foot. I'm all ears if you care to share.

What I want is the truck to sit low enough with a static drop that the tops of the tires are inside or at the fender wells. I want the widest tires I can fit, and I don't mind cutting or rolling fender lips. Wider is better. I'm not worried about power at this time. This would be a cruiser more than anything else. That's really about it. Sounds fairly simple to me. I'm guessing it's really just going to be whatever my preferences are, but I appreciate any input.

Trucks I'm interested in are 85-87 C10s, late GM400T's with the updated dash, and GM800T Sierras. All trucks would be 2wd, short bed, regular cab, fleet side.

Thanks
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Old Jan 7, 2020 | 07:48 PM
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All will require custom work for what you're after. Custom fender aprons and liners, c notch, rolled inner fenders and probably things like fuse box and coolant overflow remounting

that said, the GMT800 has a rubbing issue. The front axle should have been 1-1.5" further forward from the factory. However..... I'd still pick it because LS power, better frame than GMT400, better looks and likely a less hammered truck overall due to age

good luck, and have a good welder on call for some of what you're after

Last edited by arthursc2; Jan 8, 2020 at 12:51 PM.
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Old Jan 8, 2020 | 10:15 AM
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I'm aware I'll need to install a C-Notch. That's not a problem for me. I haven't found anything saying I'll need to change the fender wells. I may have given the impression I want to be lower that I'm shooting for.

Here are the kits/stance I'm looking into. Will I have front fender liner issues?

https://www.ridetech.com/products/su...etgrip-system/

https://www.ridetech.com/products/su...ension-system/

https://squarebodysyndicate.com/sbs-formula.html

Thanks for the response.
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Old Jan 8, 2020 | 11:04 AM
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That's going to depend on the wheel/tire size and backspacing you use.
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Old Jan 8, 2020 | 11:13 AM
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That's what I was figuring as well. Every vehicle has its limits.

Thanks
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Old Jan 8, 2020 | 12:55 PM
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Originally Posted by Snow Dog
What I want is the truck to sit low enough with a static drop that the tops of the tires are inside or at the fender wells.
Thats going to require a custom fender apron and liner; which will necessitate a mounting solution for coolant overflow, fuse block, washer bottle and ecu (certain items on that list are generation specific and not inclusive of every gen of GM truck)

Unless you plan on a droop only, 0" bump travel suspension setup, the tire has to have somewhere to go

Beyond that, I still vote GMT800
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Old Jan 8, 2020 | 05:21 PM
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OK. I understand what you're saying now. Sorry I missed it the first time. I'll keep this in mind. I honestly thought the Ride Tech kit sat lower when I typed my post. If I go lower, I expect it to become more involved and difficult.

Thank you
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Old Feb 17, 2020 | 11:31 AM
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Gmt800 would be my pick for a platform for sure. Amazing engines, great chassis shared over a huge amount of models with lots of interchangeable parts. Hd front ends look killer on the little rcsb trucks, gmt900 brake upgrade is straightforward from what I’ve heard and you can use sway bars off a tahoe/ yukon/ escalade on the truck with some modding.
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Old Feb 17, 2020 | 05:04 PM
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Gmt900 is the easiest to make power with, it's safer and still looks current. I know you said gmt800 max but the rods and pistons are weak and fuel systems plus trans will need major attention. Gmt900 10 to 13 are powerhouses and parts are everywhere for them at good prices...
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Old Feb 17, 2020 | 08:46 PM
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Thank you for the responses. I appreciate the information.
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