4L60E to 4L80E EASY Driveshaft CONVERSION

Upgrading from a 4L60E to a 4L80E? Trying to figure out what you're going to do for a driveshaft with off the shelf, readily available parts? Here's your solution team!!
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[@ozzygilliam9194]

This helps out a lot, thanks!

[@MohawkMotors]

No problem!

[@jlrockafella]

That's awesome brotha👏

[@MohawkMotors]

Thanks!

[@ohshitwatsmyname]

The 4wd Chevy s10 from 91 has the small u joint and the 32 spline

[@MohawkMotors]

no kidding, I did not know that, may come in handy in the future! Thanks for commenting!

[@alexduke5402]

Well you helped me out brother. I have a whole donor truck and as soon as i pulled the yoke out of the t case on the 2500 i put a glove on it to protect it never looked at it. I was under the assumption it was bigger and wasn't compatible. I just went out there and pulled the glove off and what do you know, same thing smaller u joint. I was looking all over the Internet trying to find a conversion joint for using the 2500 shaft on the 10 bolt rear. (I'm not ready to swap axles yet the 10 bolt has 513 gears. I'm already hemorrhaging enough money just getting this 4l80 in there without swapping axles the truck has been sitting since 2012 when i blew up the Monster "HD 4L60E" after 5k miles... so i want to drive it and iron out the problems I'll have from it sitting before i deal with the problems troubleshooting the solid able swap Dana 60. I'm hoping doing one thing at a time will make it more tolerable) I'm thinking because the truck is lifted 9"my 1500 driveshaft should work fine since this one did on a stock height truck. Thank you! That was one of the bigger worries i was having.

[@MohawkMotors]

Glad it helped man!!! I looked all over the internet and couldn't find a clear answer anywhere so that was the goal with this video. Try to help people with a commonly available easily sourced way to get it all hooked up!

[@lexustech48]

Great discovery! I wonder if this trick works for 4th Gen LS1 Camaros and their aluminum drive shafts.

[@MohawkMotors]

I believe they use a smaller u joint than the 1500 trucks, but you may be able to find an adapter u-joint for it as well!

[@adamballou1295]

This is great I’m doing a 4l80 swap on a ecsb truck so I’m hoping this will work with the 2 piece driveshaft setup Edit on 12/23/2023: I finally put the 4l80 in my extended cab and I don’t need to use one out of a 4x4 1500. Depending on what your 4l80 came out of you may need it but the carrier bearing mount holes are slotted so the carrier bearing can be move forward/ backwards to make it fit

[@MohawkMotors]

Hope it works for you!

[@adamballou1295]

@@MohawkMotors thanks man

[@JoseSanchez-bg5hf]

@@adamballou1295 did the same set up work on ur extended cab

[@adamballou1295]

@@JoseSanchez-bg5hf I have not even put it together yet as I’ve been super busy

[@Journeyman-Fixit]

I have a 2003 Sierra work truck with a fleet side 6'8" long bed. I want to remove the 4L60E (23.5" length) transmission and replace it with the 4L80E (26.4") length transmission. The math seems to say I need a 32 spline yoke that slides into the rear of the 4L80E transmission that is shorter by approximately 2.9". My main issue is that I have not pulled the driveshaft off yet so I cannot share the yoke parameters currently on the truck. But I'm not really sure that would be very meaningful as the current 4L60E transmission is being replaced anyway.

[@MohawkMotors]

The 4l80 yoke has more slip/spline length than needed in most applications. Assuming you are stock ride height, and the yoke is not rusted or damaged, you can remove some length from the front of the spline/slip area (the part that goes into the transmission) to shorten it enough to work. The hazard of driveshaft being too long is it bottoming out in the transmission when your suspension travels, removing excess length from the front of the slip yoke, can achieve the same thing as shortening the driveshaft, as long as you still have adequate spline engagement on the output shaft, rule of thumb for spline engagement is 2.5xdiameter of shaft.

[@gilbertrubio630]

Thank you for the vid appreciate the breakdown Do you think This application would work not only on 4l60 to 4l80 swap on a rcsb but also 4.3 to 6.0 swap asking cause idk if the flywheel , or motor mounts makes a difference in the measurements

[@MohawkMotors]

Changing the engine from 4.3 to 6.0 will not make a difference if you're using factory mounts. The flywheel doesn't affect where the transmission is mounts in the truck. If you use factory mounts the rear machined surface of the engine will be in the same location as well so the transmission will be in the same place.

[@gilbertrubio630]

@@MohawkMotors gotcha thanks again keep up the content

[@TEAMPHY6]

What was the difference in length between the two yokes? I'm trying to make a 4l80e swap easier down the road without needing a new driveshaft.

[@MohawkMotors]

only like 1/4 inch difference in length from front to back

[@jminnick5878]

A shaft center of ujoint center of ujoint would be very helpful

[@MohawkMotors]

I would do it as a "this will get you close" measurement. If I have a chance I'll grab it next time I see Alan

[@mrflinstone2553]

Have a 07 yukon 5.3 w the afm & 4l60 . Did a swap from my 07 escalade 6.2 w 6l80 switched engine harness & ecu everything works like butter but ujoints are a tad bigger to go in rear differential. Cant find any info besides getting driveshaft modified or swapping the differential. Hopefully i can find a set of u-joints like the one you mentioned

[@MohawkMotors]

If you can get some accurate measurements I'm sure you can find an adapter u-joint, those are both super common sizes of joint so I'd be surprised if there's no adapter.

[@mrflinstone2553]

@@MohawkMotors i did find a moog 447 worked like a charm, installed it today, thanks

[@luis27787]

Hey doing a swap What’s type of crossmember is it custom or a 4x4 1500 crossmember and does it have to be for a single cab

[@MohawkMotors]

It'll depend on what exactly you are swapping into which frame. I just found a crossmember made to mount a 4l80e in a 1500 series frame.

[@Ivan-jp2ei]

by doing this you can use the factory truck driveshaft? you won't have to use a custom driveshaft or anything like that correct? And great vids man!!

[@MohawkMotors]

Yes, by using the output yoke from the 4y4 truck and the adapter u-joint you can use the driveshaft original to the truck

[@artdecarie4255]

I have a 2000 2wd with 4l60e im swaping to 4l80e 2wd its a reg cab shortbox lowered 4/6 So the 4x4 i pull the yoke out of does it need to be a 4l80e 4x4 or 4l60e 4x4 thanks

[@MohawkMotors]

4l60e 4x4

[@manneecastillo8834]

Do you happen to have part number to that yoke? I go to local junk yards and all they say is no we don't have it. They're too lazy to go check

[@MohawkMotors]

I'm pretty sure I put it in one of my previous replies for someone else, if not you can look it up on rockauto

[@207shenanigans]

Awesome vid, in the middle of the same swap now. Do you have a part number for the rear output shaft?

[@MohawkMotors]

Thanks, I looked on rockauto, and they list Dorman part #697560 as the rear driveshaft slip yoke for transfer case end of the driveshaft. That should be the correct part #. Description is the same part I used.

[@207shenanigans]

@@MohawkMotors that’s awesome thank you. I have the 80e yoke but have yet to take measurements as my tranny is still being built ( hope to have back this week). Another questions, can the 80e slip yoke be cut easily to fit to length ?

[@MohawkMotors]

You can cut the 80e slip yoke to shorten it up, just try to keep it as cool as possible while you're cutting, and do a really good job of deburring the cut end so you don't get any gouging or rubbing that could cause a stress point in the output shaft.

[@207shenanigans]

Thanks for the info, mine did not need cutting. Swapped universal and used a 80e slip yoke worked great with plenty of clearance

[@aaronmiller8625]

Is that yoke counterbored? I’ve been trying to find out if it is or not but I’m not having any luck. Also which output shaft do you have? Mine has about 2.75” of spline and then an o-ring, it was originally a fixed yoke. Any info you can provide would be great! Thanks!

[@MohawkMotors]

yes it is counterbored, I don't know if all of them are but this one was/is. This was for a slip yoke output shaft, you can use your fixed yoke output shaft as long as you don't over extend and have insufficient spline engagement. Your fixed yoke output is a couple inches shorter than the slip yoke output.

[@aaronmiller8625]

@@MohawkMotors awesome! That’s how I understand it, too.. I’ve seen I can also use the TH400 slip yoke but I have to get the long one and cut it down.. this seems both easier and cheaper lol. Time to check some junkyards.

[@cesarcruz2216]

i have a ext cab that i did a 6.0/4l80 swap i used the same driveshaft and used a shorted 4l80e yoke i bought the moon 447 off summit racing when i installed the u joint to the yoke it has a play to it like it moves side to side. when the u joint is on the drive shaft it’s perfect no movement or nothing but in the yoke i can move side to side like it has a gap of a 1 or so on each side of u joint

[@slimjim7095]

Hey bro, I’m trying to do the same as yours but idk what year your truck is.?

[@cesarcruz2216]

@@slimjim7095 mines is a 2000 gmc got a lq4 and the transmission from a 2002 chevy 2500

[@MohawkMotors]

the output yoke for a 2wd 4l80 truck is not the same size, they use a 1350 yoke size which is wayyyy larger than the u joints they use in the 1500 series trucks. You'll need to find an adapter joint for 1350 to whatever size your driveshaft is. I made a video on how to measure u-joints to find the correct size you need

[@rotsbelramos7685]

Is the 4x4 1500 yoke the same as the 2500 yoke also

[@MohawkMotors]

no

[@DollasignDungee]

I have a 94 tbi 4l60e 2 door swapping 5.7 &4l80e would my drive shaft work ?

[@MohawkMotors]

The 4l60 slip yoke won't fit the 4l80 output, and unless you move the engine and transmission forward your driveshaft will be too long.

[@WARD5KUSTOMZ]

4l80e swap in my 99 c1500 burb. The joints are the same as the 1ton I pulled it from. Would the 4wd slide yoke work without having to get the conversion joint?

[@MohawkMotors]

If the joint in your suburban are the same as in the 1 ton you pulled the transmission from, I would just put the 4l80e output yoke onto your suburban driveshaft.

[@WARD5KUSTOMZ]

@@MohawkMotors the one I pulled has a fixed yoke

[@MohawkMotors]

ohhhhhhhh, you'll need to find a 32 spline slip yoke with the same size u joint, from what you're describing the 1500 4x4 slip yoke won't have the right size u joint.

[@WARD5KUSTOMZ]

@@MohawkMotors I was hoping I could use the 1500 slide yoke. But I found out that it was too small. My hope is to be able to use the same driveshaft

[@chrisstafford4702]

Could you clarify? Do I need a rear yolk from a 2000-2006 4x4 4L80E?

[@MohawkMotors]

To use this joint, you need the rear output yoke from a 1500 4x4.

[@rednckracng517]

Yolk from 4x4 4l80 or 4l60

[@la_verde_6.0]

So a 2001 all wheel drive suburban yolk work?

[@MohawkMotors]

yes you could use that yoke, it would fit

[@manneecastillo8834]

Will this work if your truck has a 3" 5" drop?

[@MohawkMotors]

It would still work as far as fitting the transmission, but you may need to get the driveshaft lengthened or shortened

[@jordanmartel2115]

What is the number for the moog joint ???

[@MohawkMotors]

It's in the video right at 1 minute in

[@LSXMILLER]

Did you have to balance drive line because yoke is not the same will it cause wobble ?

[@MohawkMotors]

No, drives exactly the same as it did before. It could cause an imbalance but in this case I think we were lucky and the yoke was close enough to the original.

[@LSXMILLER]

Asking because mine ls swap plus 4l80 is wobbling when I give it gas at rolling speeds in steering wheel I think my rack pinion had air in it not much power steering fluid ? Or drive line not balanced right or Torque converter spacing idk to many dang things I'm kind of lost lol

[@MohawkMotors]

what do you mean wobbling? the yoke is wobbling? The steering is loose? In a situation like that, I determine the problem, then hypothesize on possible causes, then go through and check each possible cause. Usually if you can determine the exact problem, there are only a couple things that could be causing it, then you just have to figure out which one it is. Diagnosis and correction is a game of patience.

[@Joshalaw13]

Do you have the part number on the 4x4 yoke ?

[@MohawkMotors]

GM part #88963576

[@linolemus610]

I have the 447 ujoint and the Dorman 697-502 yoke but the ujoint won’t slip into the yoke and the caps are too big to even go into the yoke. Could I sand it down to make it fit ? Or any thoughts?

[@MohawkMotors]

I wouldn't sand it down to make it fit, you're pretty much guaranteed to make it out of round and then you might get a vibration. The 447 u joint is a 1350 to 1344 u joint, too big like you said. I made a video on how to measure u-joint to identify their size. You'll need to measure your yoke, and measure the driveshaft, find out what size u-joints will fit each (google the measurements) , then find an adapter u-joint for those 2 sizes

[@linolemus610]

@@MohawkMotors thank you so much.

[@red5xx197]

so all i need is my 4l60e shorter yoke and that u joint and the cross member and ill be set?i have a 2000 silverado rclb btw

[@MohawkMotors]

you need the rear output yoke from a 99 to 2006 4x4 1500 truck, the u joint, and the crossmember and it should bolt in. You'll also need to address the electronic differences between 4l60 and 4l80.

[@Boudreaux_TnWildlife]

@@MohawkMotors to clarify i can pull slip yolk from 4x4 4l60 ?

[@MohawkMotors]

@@Boudreaux_TnWildlife yes

[@auto3garage522]

Part number to slip yoke ??

[@MohawkMotors]

don't know it, I'm sure if you looked on rock auto you could find a part number for it though.

[@5.3Panda]

So if I do the yolk swap I don’t need to send the drive shaft to get cut?

[@MohawkMotors]

If you're doing the same thing, probably not.

[@5.3Panda]

@@MohawkMotorsim working on a 2006 Silverado RCSB wanting to do the 4l80 swap I have 1 single drive line

[@5.3Panda]

@@MohawkMotorsI sent you a message request on instagram!!

[@JUSTPAUL_VR]

What if I’m swapping into a 4wd not 2wd?

[@MohawkMotors]

than you'll still need the different crossmember, you will need the correct transmission to transfer case adapter, and you will need to change the transfer case input shaft to match the 4l80

[@anthonycano2139]

Shorten yolk part number?

[@MohawkMotors]

Dorman 697502

[@zoesdad71]

Do you know what the wheelbase on that truck is

[@MohawkMotors]

119" inches

[@zoesdad71]

@@MohawkMotors thank you

[@westcoast443]

Hey Jason do u have the link to the crossmember?

[@MohawkMotors]

I don't have a link for the exact one I used, but here's one just like it, there nothing special, easy to find from any manufacturers through a google search. suspension-engineering.com/products/suspension-engineering-silverado-sierra-4l80e-conversion-crossmember-2000-2006-2wd-satin-black?variant=41959950024949&currency=USD&gad_source=1&gclid=Cj0KCQjwhb60BhClARIsABGGtw-nDWeQGj4tYqd0pIIyAp_vLzE8Y-mAF126AZDgVsvmHCoRmiP_vvsaAk3rEALw_wcB

[@westcoast443]

@MohawkMotors I have the crossmember to do the 60 to 80e swap but it's too short and found out that 99 and 00 crossmembers are different (longer) so I ordered it yesterday! But thanks for replying brother!

[@MohawkMotors]

I was literally thinking to myself, I should mention the difference between the 99 and 00 crossmember and the 01 and up crossmember after I replied. Glad you got it figured out!

[@westcoast443]

@@MohawkMotors 😆

[@Jayvone1000]

I have a 95 Yukon 4x4. Would this method still apply?

[@MohawkMotors]

Switching a 4x4 from 4l60 to 4l80 is a completely different process, you'll need to change the input shaft on the transfer case to match the larger output shaft of the transmission. You may need to find a different transmission to transfer case adapter as well. Plus the transmissions are different lengths so you may need to get the driveshafts lengthened/shortened as well as relocate the transmission crossmember. It's a substantially more involved project to change from 4l60 to 4l80 in a 4x4

[@Jayvone1000]

@@MohawkMotors thanks. I've already done the input shaft swap. I'm looking for the transfer case to trans adapter, the only thing left is the driveshaft.

[@MohawkMotors]

Which transfer case are you using? Most of the new process transer cases, share the same 6 bolt mounting pattern. You should be just fine with a transmission to transfer case adapter from a 99 to 06 2500 series pickup. Then you should be able to shorten the rear driveshaft, lengthen the front driveshaft and be good to go.

[@Jayvone1000]

@@MohawkMotors np241

[@Jayvone1000]

@@MohawkMotors np241

[@David-mg4ei]

HELLO.. SO I HAVE A 2003 TAHOE 4.8 4L60 CAN I MAKE THIS WORK?? THANK YOU..

[@MohawkMotors]

Yes, but your tahoe uses a very short driveshaft.

[@David-mg4ei]

@@MohawkMotors SO WHAT DO I DO...??? THANK YOU...

[@MohawkMotors]

What are you trying to do? Convert from 4l60 to 4l80? 2wd or 4wd?

[@David-mg4ei]

@@MohawkMotors 2 wheel drive... THANK YOU.,.

[@David-mg4ei]

@@MohawkMotors NEW QUESTION... 1975 CHEVY C20 3/4TON LONG BED BODY.. WILL THAT SIT ON THE FRAME OF THE TAHOE???

[@blu3cha0s]

Has anyone confirmed the 4x4 s10 will work?

[@MohawkMotors]

I don't know about an S10

[@blu3cha0s]

@MohawkMotors on my stock 99 silverado drive shaft do I have to melt the plastic stuff out of my u joints? Or did you have to doing this

[@MohawkMotors]

Yes, on gm vehicles there's always some form of retainer, so if you can't find any internal or external clips, then there's plastic that needs to be melted out.

[@01UltraMan]

What about for an extended cab truck with a 2 peice drive shaft with a carrier bearing?

[@MohawkMotors]

I'm not sure, I don't know if the extended cab trucks with 2 piece driveshaft use the same size u-joints or not.

[@sxs4l245]

This video dosnt specify. But I believe this only works for 4wd vehicles. If you have a 2wd vehicle your going to need to have driveline work done. You can't make less with more. So you will have to shorten the driveline at a shop,or at home if you don't mind vibration, to make the stuff fit.

[@MohawkMotors]

This video is about a 2wd truck. The shorter yoke makes up for the longer transmission going from 4l60e to 4l80e.

[@jamesvalencia1508]

Lol😂

[@sxs4l245]

@MohawkMotors I'm not following the logic. If a 4l80e trans is something like 8 inches longer (I don't know specifically but i know it's longer), how can you make a driveline shorter with a yoke? Because I have done this swap and a yoke didn't fox my issue. Please expand on your experience.

[@lsgt5132]

So would this work with the 4l80 swap with a 4/6 drop?

[@MohawkMotors]

I'm not sure, with a 4/6 drop you would need to check and make sure you still had enough plunge and extension on the slip yoke.

[@benitogallegos3360]

Did you ever get it figured out?