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the ULTIMATE BRAKE CONVERSION for your GMT400
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- Опубліковано 26 лип 2024
- This spring, I installed a Dana 70S rear axle from a Chevy Express van into my GMT400 K2500 Suburban. The Dana 70 comes with massive rear disc brakes, but I hadn't done anything with the front brakes yet, so it was time to match the front. Stock, the GMT400 trucks use a single piston caliper, but I wanted to match the rear with a twin piston caliper, so its GMT800 2500HD parts to the rescue. That's right, we're installing 2500HD twin piston calipers and floating rotors on the front end of a GMT400 K2500 truck.
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Chapters
0:00 K2500 OBS Brakes SUCK
3:04 Tear Down
4:48 Parts Overview
10:47 Suspension Reassembly
12:38 Important Clearance Notes
17:36 Brakes Installation
18:23 Chasing Parts
20:53 Its Done
#gmt400 #obschevy #bigblock
_I had a few guys ask for_ part numbers, and while I don't have em handy, I'll try to make this a comprehensive list of all the stuff I used...
Parts from 1999-2000 Silverado 2500 LIGHT duty
one pair front steering knuckles
Parts from a 2001 2500HD
2x lower control arm
2x wheel hub/bearing
2x disc brake rotors
brake pads
2x caliper and bracket assembly
4x caliper to spindle mount bolts
2x hub dust cover
2x brake backing plates
2x brake banjo bolts w/copper sealing washers
Parts from a K2500
2x front shocks
2x upper control arm
2x sway bar end links
Parts from a 2001 Silverado 1500 4wd
2x front brake hoses
Misc
3/16" to 1/4" brake line adapter
2"/foot reamer
Any interest in selling the old lower control arms? I can't find any consensus on what will work other than those factory K2500 ones off of those models on my K1500.
Thanks for posting this. Keep progress going on the Suburban. Don’t get bored with it.
Thank you, LT!! Much appreciated!!
Thanks, I have a 98 4x4 3500 crewcab. I've never thought the brakes were worth a damn. I thought about rear disc but the front disc upgrade sounds like the key. Let us know how it all turns after the master cylinder. I have 2 early 2000 3/4 suburban parts vehicle. I think I'll be yanking some parts off soon. Not sure what knuckles they have?
Hey LT how does performance heads and rotating assembly and custom headers and full exhaust that would be cool and maybe 2 small turbos that would be sick
Again, no one does parts interchangeability like General Motors. Nice job, LT!
nope, and I'm happy to take advantage of that
Honda does just saying
Yeah... On a freakin' Ford, if it has an entirely different suspension if it has a different alternator.
@@blackbuttecruizr Ford is a nightmare. A single exhaust pipe can have up to 10 different bolt sizes... Man, don't get me started.
The worse offenders are the size 7 fasteners they use on the edge,bronco, amd ecosport also on the new explorer not to forget the gt350 whole front is held on by 7's
Love the swapping of factory parts, I bet those new brakes are WAY better. I agree with the comments below of swapping a 6L80e with a whipple on the 7.4.
You do an awesome job of exploiting GM’s factory options and making swaps work! Your knowledge and research are amazing!!
I appreciate that!
This is fast becoming one of my favorite GMT400 builds on UA-cam! I was on a forum dedicated to these trucks when someone posted a link to the first video you posted introducing the Suburban, and when I had seen you'd done an 0411 swap I was seriously intrigued; I've done the 0411 on my 96 K2500 with a 454 and you actually helped me solve my crank relearn issue by pointing out the need to ground pins for the parking indicator!
The GMT800 knuckle upgrade is also something I've looked at for years, and at first I had settled for putting K3500 Dually rotors, calipers, and pads; no forums had a step-by-step process to this conversion, and the ones that did are now long gone so I'd always been hesitant about going through with the swap.
I have heard some other K2500 owners complain about the angle of the shock being changed by using the GMT800 lower knuckle causing the ride quality to suffer, have you noticed anything substantially adverse so far or is it too early to tell?
haven't even driven the truck with the conversion, but when I do I'll make a video showing the results and how I feel it drives. thanks for watching!
Love this content, now I want to swap my brakes & rear end on my 97 K2500 Burb. Stop giving me more good ideas already. 🙂 Keep up the great work!
This is such great quality content. The research and thorough checking you do demonstrates what any owner with some mechanical ability can do with a normal garage. This is real cartubing.
As someone who has a 1980 K20 Suburban, I love seeing another 3/4 ton Suburban getting love here. Keep up the awesome work.
thanks! will do
Love the obs and the factory crossover upgrades. Keep up the great work
This is awesome! Hell yeah! Now that the burb can stop lets see some power get added to the 454!
I'm a ford guy but I enjoy content like this about using oe parts to improve on what you couldn't get from the factory-installed. It's making the truck custom to your liking and still factory
Love me a Suburban!!! My Dad took our whole family on a 3 week trip to Alberta in a 3 door blue and white one. Great memories.
I love the suburban stuff!! Looking forward to you doing a k1500 to a k2500 conversion series also! Thanks for the videos 😀👍
You and I both!!! I've a 99 Suburban and I am DYING to do the conversion... especially since I am possibly trading up my boat. Once thing is for sure: would need new rims!!! 🤣
I've been following this and Ugly truck since I started planning my 8.1 swap on my 2000 K2500 GMT400 crew cab.
I’ve been seeing people talk about this in different forums on the web, but no detailed information. Thank you for this! Now to convince my wife that I need to do this on my 1996 Suburban. Great video!
Glad it was helpful, and good luck with the convincing!
I do love the suburban. I’ve actually been trying to find one but with no luck. Your suburban is unique and awesome. Please keep working on it.
Love GMT400's. Really enjoy the content 👍
Great Suburban content! The extent of the information is very much appreciated!
Best mix/match of parts since that AWD Silverado dealio y'all did on the tee-vee...great stuff (and I dont even own one of these trucks).
thanks! i love it when factory parts can be mixed and matched
Awesome work as always LT! Great content on your page. I love these kind of videos!!
Liking this truck a lot. Planning some of these upgrades to my 2000 k2500 pickup.
Thanks for making this video! I'm picking up a 1999 K2500 Suburban to turn into a family snow rig/tow pig, with new gears and diffs, etc. I'm looking to make everything as spiffy and serviceable as possible, and this swap wins on both points. I purchased the rear axle and front knuckles today, and I'm making up the rest of the parts list.
You made this a LOT simpler!
Glad I could help out!
I have been wondering how to go about this after seeing that gmt800 guys are putting bigger gmt900 front brakes on their half tons. Having a half ton gmt400 suburban I thought I was S.O.L. for interchangeable brake upgrades, but this has got the wheels turning in my head! I'm glad you're back to uploading suburban content 👍🏼
👍 for the GMT400 Suburban! Keep this project going! For me this is the best looking Suburban they made. I also vote for the 6L80/90 upgrade and a power adder. Lots of parts available for 4L80s, but I’d love to see what you can do with the 6L80/90 series. Maybe even a triangulated 4-link and coil overs for the rear for better ride and articulation…
Excited to see this!
Great info! Thanks for sharing this trial and error upgrade
Love the GMT400 platform! Wanna see more!
Love the GMT 400 stuff! One of my favorite channels to watch
Glad you enjoy it!
I love this break down. I am really glad I found it before I started tearing apart my 92 GMT 400 K2500. I just bought it two weeks ago for $900. It runs and drives but the breaks are bad. I am also going to do a coilover conversion on the front
Are you making your own coil over conversion or are there kits available? Is there more information on this? I’d be interested in learning more about this topic for sure.
Oh I love your suburban. After watching all of your videos on it I would like to get one myself.
Awesome content and like that you keep in the little hiccups along the way...makes it more "real world" experience like the rest of us go through! Great job and look forward to converting mine soon!
More to come!
The suburban is a great and those upgraded brakes are going to be a lot better!! Great video and thanks for sharing!! :)
This video could not have come at a better time. I’m about to redo the front end on my ‘99 K2500 Suburban, too, and I’m glad to know I can upgrade the brakes in the process. Keep the GMT400 vids coming! I’m going to try to fix my sloppy steering, so any content like that would be helpful.
Glad I could help!
I ran into the same problem with my 2006 Silverado 1500 4x4 when I put 2019 4 piston calipers on it with drilled and slotted rotors then Jegs sent me the wrong braided brake lines. I must use my old brake hoses until I get two adapter fittings. Thanks for reminding me about the hose fitting adapters. Great work on your truck it should handle 100% better.
Hey man just wanted to say ive been watching you since powernation powerblock on spike. Your fan - syn.
Much appreciated and thanks for watching!
Yes! Keep doing gmt400!
I do love the GMT400 content. Love the OBS Chevy stuff
Love the conversion using GM parts!
Awesome truck! Please keep going! Finish up the front end and run it through a torture test like pulling, off roading , over landing !
I vote to keep the suburban content, it’s the reason I subscribed to your channel. Lots of possibilities for these trucks and so cheap to get started with
So good. Got to watch it again.
i really like the gmt 400 videos and definitely excited for the two door blazer idea 💡
Awesome Job!!! I love this platform!!! Forced Induction would be cool!!! Headers and new exhaust system!!!
Excellent video LT, I have been wanting to do this to my 99 Sierra
I just switched over to 6 lug, now I gotta go to 8? Damnit! Keep up the gmt400 content for sure!
Great informative video!!! Keep those coming on the OBS and NBS.
they're my favorite two body styles from GM
I enjoy the Suburban content for sure. Gaining knowledge of the GMT400 platform I'm putting to use, though I'm just a cousin K1500 with the 5.7
Now you got my attention! The brakes on my 93 z71 and they were ok but the rear drums became a problem with rusted out back plates and they actually ripped out the anchor pin when I slammed on the brakes in 4 wheel drive. Very smart move by not drilling the upper control arm, many people don’t realize GM has a lot of tempering and tech going on in that skinny control arm.
yeah, something as important as a control arm is not where I want to experiment
I grew up with that baby style trucks and love them, I’d still love to see someone take one of those suburban’s, remove the rear glass and turn it into a suburban panel, as well as making it a two door.
Awesome work!
Gmt400 is what brought me to your channel. Keep it up.
Thanks, will do!
Suburban content is awesome! Keep it up.
Love the suburban content and what you’ve done so far! Please keep it a suburban too. What about a 6L90 swap and build the 454, possibly with a Whipple. It would make a killer family tow rig
the 454 would shread a 6l80
@@brendan747 I’m pretty sure it will be just fine when they’re built to go behind LSA engines from the factory
@@justingustafson7964 LSA applications used the 6L90.
That would be cool
@@justingustafson7964 lsa engines weren’t put in 7,000 lbs pickups with high towing capacities and all of the low end torque.
I like the GMT400 content, I have a 92’ C1500 WT and I like everything, but keep on the GMT400 content if you want, I like it
I love the Burban content. I binge watched it when I subbed a few days ago.
By the way... The spindle lower pocket (the small one inside the big one) that looks like an elongated race track (@8:55) is actually supposed to be cut out. This gives you access to the zerk fittings for the lower ball joint. The factory was notorious for missing these uncut versions during inspection, even on the 88-94 GMT400's. Easy to cut it out yourself though... and for some reason, this happened on the right side more then the left side.
So glad to see you back on the Suburban. You’re killin’ it, LT.
thanks a ton!
@@LawrenceTolman don’t you mean 3/4 ton? Lol, I’ll see myself out.
Love the suburban content. Engine and exhaust mods would be cool.
Excellent video LT. I really enjoy all of the gm content, doesn't even matter which vehicle it is!
I'd really love to have you install a turbo on my GMC Savana 6.0L. It's a real tight fit under the hood so it would be a hell of a challenge I bet.
This is my favorite of your trucks, and the reason i found your channel.
Glad you enjoy it!
Love this Suburban content!
I'm doing the same upgrade on my truck and I found that the taper on the upper ball joint is the same as a 1500 series ball joint, And I think my stock lower ball joint will fit just need to remember I'm a little bit to bring the ball point in more Because it is real close to the CVS axle
GREAT VIDEO & A GREAT UPGRADE!!!! THANKS FOR SHARING!!!! I LEARNED SO MUCH!!!
Glad it was helpful!
Really like these gmt400s and your content. If you decide to go another direction, I'll take this truck!
That looks amazing Sir. I really want to do the same.
What a pain in the ass! I respect your perseverance but can’t see it being that much of an upgrade to be worth all that headache. No disrespect, and I think you’re one hell of a technician. This is something most people shouldn’t try to do because it’s a safety thing and so many things could go wrong. Great job and congratulations on getting it done right .
Love the parts interchangability on these trucks, i swapped the ignition cylinder in my '96 c2500 to the one from a 1999-2002 silverado and while I did have to recode the door lock cylinders since the new ones didnt match (new ones were too long and the the ends were different styles), the ignition was as simple as pulling the old cylinder out and putting the new one in.
Hey man I have a couple of these trucks and I've never heard of anyone having to swap in a newer style ignition cylinder. What was the reason for it?
One thing I always like about GM products is the way parts mix and match 👍🏽
it makes for some fun projects!
I'll have to check out your video on the rear end swap with disc brakes for my 1998 GMC K2500 SUBURBAN 454
Watching with anticipation. 👍🏾
🇺🇸🇺🇸🇺🇸
Nice job Lt 👍👍👍.👌
love the 88-98 obs trucks
I enjoy your content a lot!!! I also enjoy watching your stuff on the suburban I have a 98 Chevy Tahoe mine's just two wheel drive not four but I enjoy what you do and I'll just upgraded my brake master cylinder and went to the new brake master I'm enjoying what it's doing a lot so I'd like to see what you do if you do that as well.
As always very good video quality. Your research is the best as is your thorough explanation of all the steps you took to make it happen. BTW your hair looks better grown out. Your producer probably asked for the change.
haha... you're 100% correct about my producer
LT You’re a good guy I wish you lived closer to me I would love to bring my 97 Chevy K 1500 and drop it off at your place with an open check 👍
Great video, it looks like a good upgrade if you need to replace all of your old suspension parts. It’s a little pricey if your old suspension is still good.
Man, love this burb. I bought a 94 k2500 from nevada, no rust. I was thinking about the gmt800 brake swap. Thanks for all the info i will start collecting parts to do it
Glad to help
I want to do the axle swap aswell but my truck came with a dana 70 and posi already just hate the narrow track width. But im thinking it might cost the same as a good set of spacers and disc brake conversion
I love the suburban content
I have a gmt800 suburban 2500 I am in the process of duramax swapping
The suburban really would pop with a solid axle conversion but you put a nice upgrade with the 800 series brakes. Now a nice supercharger would wake that truck up!
Great video LT! Enjoy this content!!
Appreciate it!
Love the gmt400 content!
thanks!
I started watching because of ugly truck. I enjoy all the modifications you have been doing to all the rides. Keep up the good work.
much apprediated!
You can make minor non structural alterations to spindles with silicon bronze brazing.
Tig or oxy. Make sure to properly clean and pre heat the cast iron before starting, just stick them in the oven on max until hot.
Keep them warm after brazing to ensure they cool slowly so as not to crack.
This is ideal for correcting mistakes in rheaming out the tapers.
the GMT400 upper control arm comes in two GVW 7200lbs and 8600 lbs. the 7200lbs has a smaller tapper diameter on it
Very very cool!!!
Thanks
Love the suburban content keep it up!
Thanks! Will do!
Love the content LT thanks!
Love it keep it coming
Love the Suburban project and mods! I have a K3500 454 4x4 and all of this looks like stuff a want (need) to do.
Can you post post a parts list?
Great content LT very informational 👍🏻👍🏻👍🏻
Glad you enjoyed it
love the gmt 400 chassis info. having a 99 tahoe as a secondary vehicle this content is awesome. Plus, i believ the gmt400 chassis is or has become rather popuular again so sprinkling in this content i believe helps your viewers relate and shows not everything is just newer trucks! keep up the good work and great content.
I agree, I think these are some of the best looking trucks they ever made
@@LawrenceTolman having the 1/2 ton chassis in the tahoe i cannot find info on if the 3/4 ton spindle would allow the 6 lug hub to bolt up. i have only found forums talking about special service vehicles (police or fire) caliper upgrades. any thoughts?
@@richadams3256 from what I could tell researching for my k1500 they're different and the 2500 spindle won't work.
These gmt400 trucks are so plentiful out here. I got my last one out of Logan for$600 a 1996 1500 suburban. It's a donor for my 67 c20
LT= Truck Nerd👍😎
Great video
The new brakes look good. They should help to whoa that big block! Seems like a lot of work though to get everything to work together. Reaming the spindle would make me nervous unless I could get use of a mill for rigidity. Thanks for the video!
-mike
looking back, I wish I would've found someone with a mill or a drill press to make 100% sure the angle was perpendicular, but it worked out in the end...
Great job! 👍
Thank you! Cheers!
Nbs step side shorty are the most beautiful new trucks period so we understand.
Your projects always have that twist that i enjoy the most. originality. I don't really have a brand loyalty so when I bought a K3500 with a 7.4 vortec a couple years ago I was baffled that there aren't more intake manifold options. I expected so much more from the aftermarket. For the life of me i can't find anything more than a mild cam swapped into these. To me it seems like the overlooked platform. I couldn't tell you how many times I've read the guys in enthusiast groups comment that the 7.4 vortec is junk compared to 8.1L. boggles my mind. It's an efi BIg Block Chevy with a roller cam and a 4L80e behind it. I don't get it. so much potential
Nice job, I used the k6292 upper ball joint so I didn't have to ream the spindle. The front 2 holes line up the rear 2 need to be modified. I felt more confident doing it that way instead of buying a reamer and possibly messing it up.
We love these big block burbs and trucks but let's be honest I drive my duramax over my big blocks most of the time because of the fuel mileage.
Any videos on possible fuel efficiency upgrades would be awesome. If that is a possible thing lol. Msd coil on plug ignition, gear vendors, any pointers on things like that.
In case it might save anyone else some time and money, dont do this. This dummy recommended this, and the joint is nowhere at the correct angle.
I have a 2001 Chevy suburban 2500 not HD and it has the 8.1 with 4l80e just swapped a torque converter from monster that thing revs way fast 🤟🏽