Gmt400 chassis. Jun 8, 2015 · I have done 4 ls swaps into gmt400's.

Gmt400 chassis Amd the hours involved is rediculous. You'll Apr 24, 2010 · If frame mods are illegal, then the whole 800 frame idea is out the window. I have a friend that works at the local GM Dealer and comes up w/ odd deals. Sep 15, 2020 · They’re designed for the GMT400 and C1500 2WD truck chassis. This is mostly accurate. It includes everything needed to create modern drivability with an ultra-low show GMT (General Motors Truck) is a nomenclature used by General Motors to designate multiple vehicle platforms. GMT800 (1999–2006/2007 HD) Introduced new Vortec V8s, improved safety, and expanded luxury trims like Denali and Escalade. 7 vortec harnesses installed in the trucks and double sensored the ls engine so the dash gauges would work and the ls was stand alone but still controlled the 4l80e's in both Full-Size Truck & SUV Platforms GMT400 (1988–2002) GM’s first modern full-size truck chassis. I was looking for one place that was easy to search and link to for everyone interested in these trucks. Smith Automotive Products, Dana Holding Corporation, and Tower Automotive. This database contains information based off of GM records, formal documents, literature, or firsthand experience. Dec 18, 2009 · I have no idea where yo put this but here is the best I thought of. Basically everything you can just about imagine about your truck. I have a 1948 chevy 6400 stake bed truck and looking to update the suspension and brakes. Jul 24, 2024 · Does anyone know the cab and bed frame hight difference, and possibly where I could buy mounts since the GMT400 frame is wider than the Squarebody frame? I plan to use the 1997’s 350 and 5-speed transmission, but just do a simple body swap and harness adjustment, and any other advice would be greatly appreciated. It Jun 26, 2023 · The cab & chassis dually frame is different than the K3500 dually- slightly longer wheel base and narrower frame overall. Here you will find specifications and information for 1989 model year Chevrolet and GMC full-size trucks. Find unique and useful parts for your GMT400 truck right here with JDS Customs. Everything is original and needs changed from rotors to pads and calipers. For 1992, the new GMT400 SUV’s are finally released! Based on the 1500 platform is the 2 door Blazer/Yukon, 4 door Tahoe/Yukon, and 4 door Suburban. It will show options codes paint set up colors trim gearing. 5" Extended Cab / Long Bed Wheelbase (in):155. 00 Since I set the world on fire and mad everyone mad by suggestion that I was going to cut and repair a front frame section, I may go a different route and have some questions about that. IIRC gm did this for the Brazilian market and I find it quite alluring. 88-98 GMT 400 Chassis Chevy Trucks w/ Inner frame rail dimension at shackle mount point of 39. The guy Dedicated to the GMT400 1988-1999 Chevy GMC Truck Parts OBS Performance Meet Dan Pettigrew AKA OBS Kenobi your Master Fabricator. Mar 2, 2014 · Neither of which are official terms in GMT400-land, however, you could consider these a 1500 with the F44 heavy duty suspension (comes with 9. Nov 6, 2025 · I got frusterated when I couldn't find a downloadable cad file of an obs frameso I made one. Rust Buster Frame Repair Sections for 1988-1998 GM's C/K Trucks are designed to keep your GMT400 vehicle on the road and running like new. GMT900 (2007–2014) More refined interiors, advanced safety, and hybrid options for select Aug 2, 2012 · I finally got the cab, box and front clip off of my project truck. The vehicle is described as a 4WD/4-Wheel Drive/4x4 Light Pickup. Roadster Shop LowPro Chassis - 88-98 GM Truck$39,995. aldanamerican. It is considered a heavy half and has 14 bolt rear end with 6 lug wheels. [8][17] C-series trucks used front coil springs, with front torsion bars for K-series trucks [8][17] (the first 4×4 pickups from an American manufacturer with unequal-length control arm front suspension). To meet the growing demand, Roadster Shop has moved forward with the development of an all new, unique chassis and suspension package specifically for these vehicles. These might be overkill but I've seen GMT400 C3500 chassis cabs with problems in this area. I've got a 98 exsb with a good body and a 74 rclb with a good frame. Also released is the GMT400 version of the C/K2500 Suburban, with an 8600lb GVWR and tow capacities up to 10,000lbs. I have managed to find a complete 93 chevrolet truck here in the UK that I plan to purchase and slip under my 48. info. Painted in 2011. General Motors GMT-400A full size truck chassis produced by General Motors and used for the Chevrolet/GMC C/K Series, Chevrolet/GMC Suburban, GMC Sierra, full-size Chevrolet Blazer, Chevrolet Tahoe, and GMC Yukon, and various chassis cab work vehicles. 5" Crew Cab / Short Bed Wheelbase (in):154. We live & breathe OBS and guarantee to provide only the highest quality performance parts for our customers. Ridetech Air Suspension System This Air Suspension System is specifically designed for the ’88-’98 Chevrolet and GMC C1500 truck. 2/th400 now im looking for a duramax/allison on a new hd chassis. Its a 95 chevy 1500 4x4 diesel. Aug 11, 2025 · The GMT400 platform was General Motors’ first modern full-size truck architecture, replacing the long-running “Square Body” C/K trucks in 1988. 5" 14 bolt), and the 2500 with the 7200 lb GVWR (6 lug, comes with 9. Shop GMT400 GMT Trucks Frame and get Free Shipping on orders over $175 at Speedway Motors, the Racing and Rodding Specialists. 2 of the 98's I left the original 5. Should help with For 1992, General Motors redesigned its full-size SUV lines, moving from the Rounded-Line C/K chassis to the GMT400 architecture first introduced for 1988. I'm wondering if my frame is different from the heavy duty diesels (with 8bolt rims, 1tons) Also, my pop in law has a 5 bolt, 2wd 1/2 ton diesel, is that an Welcome to our database for 1991-2002 GM 3500HD, GMT-455 platform, chassis-cab trucks. Mar 8, 2022 · My registration lists a "Scale Weight" of 6,020, but my truck was originally sold as a cab/chassis with a utility box and now it's just got a pickup bed, so I'm thinking that number isn't accurate. Links to PDF Scans of service and STG manuals and a links to the Parts manuals. Oct 28, 2011 · Can anyone explain SPECIFICALLY what is included in the F44 heavy duty chassis package on a 1991 c1500 2wd? The differences between heavy duty chassis and light duty chassis parts has bewildered the parts store clerks before (8 trips to the damn parts store to change front brake calipers and Aug 24, 2016 · Hello out there, Hopefully i can get some info on here for a project I have. Now I know the idea sounds crazy at first but I've done a little research and the wheelbase of a double cab 6. Here you will find specifications and information for 1989 model year Chevrolet and GMC full-size trucks. Here you will find specifications and information for 1988 model year Chevrolet and GMC full-size trucks. Everything from frame dimensions to Oct 20, 2011 · Not really sure where this would fit in - so figured I would aim here. Mar 31, 2024 · They were all mouse-chewed, so I went to Pull-A-Part and got spare harnesses and spliced the original harness with them to make good harnesses for the chassis, the HVAC, and the engine. Unless you have something else to drive amd tons of spare time, and this is just a custom restore like project. If you’ve ever stumbled upon a classic Chevy truck or heard enthusiasts talk about the legendary days of American pickup trucks, you’ve probably encountered the term Chevrolet GMT 400. Steering used a power-assisted recirculating Feb 23, 2014 · Hey guys, I had a general question about the actual truck class and types I have a 1995 6bolt light duty diesel 4x4 but it's s 3/4 ton. Dec 15, 2018 · Over the years I have collected a bunch of GM service literature. If I could undo all I did I would. Unless you have the time, the money, mad fab-skills, and time, money, and mad fab skills. 5 rims Crew Cab Commercial Chassis GMT-455 170,000 mi Originally equipped with a "Western Hauler" style bed. 0l out of a 06 k2500 w/ only 60k miles, guy was in for a new tranny and just got all new crate engine and tranny 88-98 GMT400 High Performance Chassis and Suspension product The 1989 model year featured only minor revisions from the previous year. I found some rot on my donor chassis that I didn’t see before, so I don’t want to use it. Also scrappers who grab southern rust free parts and bring up here. I am planning to put a service flatbed on this truck in the future and wanted to see if anyone had a diagram of the rear frame. O. depending on the truck and the final outcome you are wanting. 4L CA Smog Legal 4l80e Alcoa 19. All rode on a live rear axle located by leaf springs. 5" Does not work on the thicker (4") 1/2 ton GMT 800 frames 99-04 Ford Dana 50-60 solid axles with 37. If you are in need of technical advice on one of our parts, we are here to help! Oct 2, 2023 · Here is a photo of what they look like. Designed for better aerodynamics, improved ride comfort, and higher production efficiency, the GMT400 served as the foundation for a broad range of pickups, SUVs, and specialty models — from basic work trucks to high-performance limited editions. Underpinned C/K pickups, Suburban, Tahoe, Yukon, and the first Cadillac Escalade. 95 Aldan American 310-834-7478 www. 2 block and thought i could use the Dec 6, 2024 · The new trucks didn’t get a family name but became known by the model code GMT400. I was offered a 4wd 1500 6 lug frame for $250 with [17] Evolved from the previous generation, the front suspension for the GMT400 chassis is fully independent with unequal-length control arms. The 2WD trucks have coil buckets built into the frame rail to locate the coil springs, the 4WD have a more straight section since they utilize torsion bars (as I'm sure you're aware of). GMT400 GMT Trucks Frame in-stock with same-day shipping. Feb 24, 2016 · Found this information, and just wanted to post it here as I've seen a few threads ask/mention about it. It was a little easier since Roscoe's cab was already fully stripped, but if you're replacing the entire wiring harness, you'll have your interior stripped as well. In use since the early 1980s, the GMT nomenclature is used for light trucks, full-size SUVs, and vans, along with several medium-duty trucks. 5 " wide and made out of 1/8 steel. Formally used for over the road agricultural hauling and ranch work. First introduced in 1988 and produced until 1999, the GMT400 was the foundation for some of the most popular trucks and SUVs of its time, including the Chevrolet C/K Series, GMC Sierra, Chevrolet Tahoe, and GMC Yukon. Sep 8, 2023 · Pickup trucks still remained the only body styles available in the GMT400 platform. Parked and non-opted in 2012 due to transmission Dec 2, 2009 · Here is my condensed history of the 88-98 GMT400 trucks. Can I upgrade to the f44 rotors and calipers without changing the master cylinder? What is the real difference between Jan 24, 2024 · Hi, I have a 2000 k3500 classic style crew long bed dually. While the five-door Suburban wagon only underwent a generational transition, the full-size Blazer underwent extensive design changes. I cant find any info on the mounts. I was browsing a couple diesel forums, and I came past a thread that said the frames between 1/2 and 3/4tons were different. All it did was make things worse. I decided to start this site to compile as much information as possible on the Chevrolet/GMC GMT400 trucks and SUVs. This link will break down the VIN on any of our trucks going back to 1980 all the way up to 2010. This includes engine ratings, drivetrain specs, and chassis dimensions. 5" spring pin center-line. This kit is designed specifically for 88-97 Chevy/GMC trucks and SUVs on the GMT 400 chassis, fitting a 39. This is a basic history of the C/K line of trucks. 5" 14 bolt) Both have the same number of leaf springs, but the overload leaf in Oct 30, 2018 · So has anybody here completed one of these swaps? Ive already completed a c1500 cab/bed on a k3500 chassis with a 6. ~Via Mobile \\,,/ Nov 24, 2013 · The only difference between 2WD frames and 4WD frames for our GMT400's is the front cab mount forward, essentially just the front suspension module. To determine compatibility, please refer to the provided image for measurement instructions. GMT400 upgrades include suspension, engine, interior, accessories and more. Yeah I repeated that on purpose Sep 8, 2023 · For 1988, the fourth-generation Chevrolet and GMC C/K was introduced, including (1500) 1⁄2 ton, (2500) 3⁄4 ton, and (3500) 1 ton pickup trucks. Base C/Ks used a front short/long-arm (SLA) setup with coil springs on two-wheel-drive models and an independent torsion-bar arrangement on four-wheel-drive K-series trucks. I was always under the impression they were the same, the only thing different were the Mar 25, 2017 · Roadster Shop Debuts New OBS Low-Pro GM Truck Chassis At SEMA The Low-Pro chassis swap for GMT400 OBS trucks from Roadster Shop at the 2021 SEMA Show lowers the truck without compromising bed height. The 2 door models were only available in 4WD, while the others had both 2 and 4WD options available. Pickup trucks have long been a popular platform for chassis swaps. Comments on this too. This includes engine ratings, drivetrain specs, and chassis dimensions. This watts link will place the roll center lower than the rear axle. Mar 9, 2014 · I've been curious if I could update my trucks front suspension and brakes to the f44 brakes and hubs. Jan 6, 2022 · GMT400 upgrades and performance parts information here. Essentially all the GMT400 primary frame rails regardless of Apr 24, 2010 · This is the upfitter's hand book for the GMT400 series truck. With only a few exceptions, nearly all GMT vehicles use body-on-frame construction, along with rear-wheel drive (or all-wheel drive) powertrain Jul 3, 2012 · I can see this swap being way more work than it's worth. Jun 8, 2015 · I have done 4 ls swaps into gmt400's. one was a 1994. Apr 2, 2023 · The GMT400 platform has been one of the most iconic and influential truck platforms in automotive history. 5" Extended Cab / Short bed '88-'98 Truck (GMT400) (Showing 12 of 20) Sort By: Show 12 Reversion Raceworks SKU: RR00532-1 Dec 10, 2022 · Aftermarket chassis legends Roadster Shop give some love to an unsung hero, the GMT400 platform GM truck. I bought a 2500 for the 6. Just wonder what y'alls Dec 12, 2013 · I (like many here) like the GMT 400 chassis, styling, ride, well pretty much everything. GMT 400 frames were built by A. Aug 21, 2022 · I like that you already know the issues regarding the restore/chassis swap stuff. In this blog post, we will take a comprehensive look at the development Dec 16, 2021 · I'm looking for a new harness ether aftermarket or oem. I went to a VIN decoder site and it gave me "Curb Weight - Front 2,810" and "Curb Weight - Rear 2,142". Pickup trucks still remained the only body styles available in the GMT400 platform. So be sure to avoid any cab & chassis frame There are good frames that show up on Facebook Marketplace from time to time. My new question, I have a 2wd 3500 dually, regular cab long bed. Feb 7, 2017 · 1988 -1998 3500 dually Chassis frame specs projects and builds 88-98 Welcome to GMT400. There is a lot of confusing, contradictory, or misleading information out there regarding these trucks. Thanks. He found a 6. Jul 3, 2013 · I swapped the body on my gmt400 over onto another gmt400 frame. 3 of them were into 1998 trucks. I have found examples for cab and chassis trucks but nothing for regular frames so far. com 7. . A shift in The engineering for the GMT400 was done by the GM Truck & Bus group, working primarily out of a rented facility at Pioneer Engineering on 9 mile Road in Warren, MI. Is there anyone that makes one for the obs? Aug 21, 2022 · I like that you already know the issues regarding the restore/chassis swap stuff. I hope you find it useful! Jul 12, 2022 · I'm just curious if anyone's taken a GMT800 rolling chassis (and engine/tras/wiring/electronics/dash, etc), and grafted a GMT400 body onto it? Swapped the dash and electronics over to the 400. And your talking about a whole different frame here. Jul 15, 2015 · I've been toying with the idea of swapping a GMT400 body, specifically an ext cab long bed body on to a GMT900 HD+ chassis. I used the frame file to help design a custom parallel 4 link and watts link. Crew Cab / Long Bed Wheelbase (in): 168. 5" Chevy frame. But what exactly is the GMT 400? In simple terms, it’s a significant chapter in Chevrolet’s history—an iconic series of pickup trucks that defined reliability, durability, and versatility in the 1980s Feb 25, 2024 · 1988-98 Chevy OBS truck chassis LowPro IFS RS Forged Spindle with OEM performance sealed bearing hub Power rack & pinion steering HD fabricated upper and lower control arms Airbag suspension with cantilever mounted shocks Tubular front sway bar Frame: RS Exclusive Laser Rails Dual 5” inner and outer main frame rails Jul 23, 2022 · 1998 GMC 3500 HD 7. It has ever dimension you will EVER need for our truck. there are various ways to do it. The frame is 8" tall by 2. Here's a photo of what they look like, you can see the reinforcement bolted up to the flanks (and over the top edge) with the rear cab mount as part of it. I talked to painless wiring and they suggested an universal gm harness (10415). 6ft box on the new truck is only 2 inches longer than the 400 The 1989 model year featured only minor revisions from the previous year. MSRP: $915. Getting a donor truck with all the drivetrain stuff that you want will help quite a bit over adding crossmembers and such. Apr 7, 2018 · I am looking to replace the front breaks on my 91 gmc 1500 sle but I don't know how to tell what chassis is on the truck or the difference between the two any information will help thanks. Aug 16, 2025 · Drivetrain, Chassis, and Dynamics The GMT400 chassis set a benchmark for isolation and control in a body-on-frame pickup. As the 1950’s-70’s trucks become more scarce and a younger generation of builders step forward, the popularity of the ‘OBS’ GM truck has grown. Below you will find all available information on the 1993 CHEVROLET GMT-400, manufacturered by General Motors Llc. I posted this in the engine performance + maintenance Apr 24, 2018 · So I see people go the opposite direction but I'm actually curious if anyone has put a 88-98 body on a 73-86 frame. They replaced the previous generation, colloquially referred to as “Square Bodies”, starting mid-1987 (as pickups; it was a few years before chassis cab and crew cab and SUV versions transitioned).