Chevy K10 4L80e and NP205 Swap behind a small block chevy

[@jonahgregg]

Btw it's videos like this that made my truck a possibility for me. I learned 90% of what I needed to know from guys like you, so thank you!

[@J4riel]

Thank you for the kind words! Glad to be able to hand off what I have learned from others and their truck builds!

[@stuartchrusciel4576]

Great video! Exactly what ive been looking for. About to swap the 4L into my 87 chevy 3+3 dually! Great work man! Glad to see ya still turning wrenches!

[@J4riel]

Stewie! Man I was just wonderin what you been up to the other day, funny you should comment! Glad it helped ya out! And glad to see ya got hold of a square body dually man!🤘can’t wait to see pics and progress buddy!

[@steveanderson8070]

Yeah, I have to agree with most everyone else here... This is one of the most well made videos on KZbin and it speaks to me as I just received my 4L80E mated to newly rebuilt NP205, by Gearstar. Gonna get this installed behind my stroker 396 that I just finished also. Thanks for the info! Great job!

[@J4riel]

Thank you for the kind words👍 I’m glad it’s been helping folk out on their projects. I googled my ass off and trial & errored my way through it so when I finished it I figured I’d post a vid to help others. I keep meaning to do another vid but it wouldnt really be any different. Today, 3 yrs later every component in that video is still running just fine and the truck will fire up with a flick of the square key 😁🤘

[@Kurnacopia]

I am about to do the exact same swap in my 1978 Chevy Scottsdale 4x4. I am looking for a transmission and case now and am starting to put together the game plan to have this put together. A new 383 is going in soon so I need to overcome some logistics before I swap anything. This video was outstanding so thank you very much!! MK

[@J4riel]

You got it man! I had to piece it all together and figured I could lay something g out for the next guy lol. I also went with a new rebuilt 383 from jegs. The whole combo is awesome. I really need to throw up another vid, not much to look at but reliable as hell👍

[@jonahgregg]

I'm gonna brag a tiny bit here, sorry... First thing, awesome upgrades! It looks clean and well done! You shouldn't have any issues with those parts, they're tough as nails! Ok, I put a 4l80e behind a ZZ4 350 in my 1970 3 door suburban... no tps, or anything else. I went with a manual control box from Jake's Performance transmission out of Tx. It's a little black box about 3"x3" and 1" thick with a short pigtail that plugs into the trans. There's 3 other wires, a power, ground and torque converter lock up, but that's it for electronics! The only downside is you have to shift through the gears... meaning, if you're at a stop sign with the trans in drive which would be overdrive if you were humming down the highway, from a stop your in OD. So ya gotta drop into 1st gear and as ya go along 2nd then 3rd then drive. Obviously no clutch is necessary. You get used to it pretty quick. I let my kids and close friends drive it and they do fine without any practice. Now my truck is a pretty gnarly offroad rig so it works great for me. The torque converter lock up is switch controlled which means you can engine break like down shifting in a manual transmission. It's pretty great. There are little details that help the internals last forever like swapping the thrust washers with torrington style thrust bearings and billet forward clutch, alto reds, kolene steels, and most of all a big ol' cooler! All the other stuff, adapters, trans lines and shift linkage etc. is similar enough. Except for a 203 range box in front of the 205 t-case.

[@J4riel]

Awesome stuff! I had a 65 el Camino and shifted it for about 10 yrs, so when I swapped trans in this rig I was def looking to not think about shifting anymore. The computer was pricey but looking back to 4 yrs ago I am still glad I went with it. These trans are awesome! And the OD is way worth the swap!!

[@jonahgregg]

@@J4riel completely worth it! Others don't know what they're missing! 👍🙂

[@brianholmes6445]

Great video. Thanks for sharing it. Gives me a better idea of what I'm getting myself into.

[@J4riel]

Glad it’s going to help ya! It seemed daunting here and there but persistence is def the key. Still drive that same setup and still no issues👍

[@MelaniaSideWigga]

Thanks for the Nicely Done Video. The audio was really clear & I didn't have to adjust the speed! Also, your lighting was great & it's amazing how a clean setup really helped your presentation. Now that I've got all the A-V production covered. I came to this video looking for ideas about how to deal with my 71 Blazer which a previous owner has definitely made a unique setup. This one has a 400 V8, with a 3spd Saginaw transmission. As you might guess it did not take long for that Saginaw to fail in this beast because it also has a ridiculous lift kit, badly oversized tires & drive shafts that are definitely not true. Having owned, and generally like the 1990s-early 2000s model trucks, Suburban specifically, I have been considering this kind of swap. I'm not someone who is adverse to having computers on board, I prefer to just take everything out of a suburban and re-swapping into this Blazer. Your installation of the 4L80E, I think is what I'm looking for. I'd like to find out if it makes up to this 400, for starters. Anyway if you or anybody reading this has some thoughts, shoot a reply. And thanks again for your excellent video.

[@J4riel]

Thank you for the kind remarks. I just hit record on the old iPhone and away I went lol. I don’t have patience for video editing so I try and knock it all out really fluent and clean the first time. As far as a 4l80e bolting up to a 400 sbc, I think it would bolt up fine but you would have to make sure the flex plate played well with both pieces. I can’t say for certain, I hope someone else can chime in on this one and verify.👍👍

[@danielhayes735]

Wow thank you, best video yet. Needed this video!

[@J4riel]

Glad it helped ya out! 👍

[@laurabrock1249]

Really great video, I have an 83 k20 with the sm465, and not sure what transfer case but the swap is part of my dream build. Thanks again for helpful video.

[@J4riel]

Thank you for the comment! I was originally going to use a 465 but I then decided (and NEVER regretted it) to go to the 4L80e instead. If you look for the little round ID tag on the rear area of that T-case, ya may have to wipe off the grime, it'll tell you what case it is.

[@marcoceccarelli6415]

This is a really good video you did a great job

[@CopperheadWelding]

Just what I was looking for bud thanks

[@J4riel]

Awesome! Glad it helped ya out!

[@jubyaz2832]

I was gonna mount a 205 on a Allison trans.. now I know it will work .

[@keithjurena9319]

Doing the same, 6.2 diesel with 205 figure 8 TC. It has a TH400 . 1 ton so cross member is different. Going to move engine forward to accommodate the additional length. I have three driveshafts, the third being a PTO so keeping the TC fixed makes it much easier. The TPS is a stock GM unit. Advanced Adapter, the TC is already modified so just chopping the output shaft and plug the rear lube hole in the transmission. The truck has 4.56 axles, even with 33" tires, it spins out at 73 MPH. 11 mpg with the diesel. 34k miles, all original.

[@J4riel]

Right on man!! Sounds like a cool rig ya got there!👍

[@affordabledcgenerators1607]

That sounds like an M1031 truck. I have one too! Dont pull the engine forward. Do it right and have the shafts refit. Supposedly i have read that you can take a 2wd trans which already has the rear VSS no matter what year you get. Then you just chop the output shaft to the correct length. Need to confirm that because it is cheaper and eliminates having to do a full teardown for the rear reluctor.

[@keithjurena9319]

@@affordabledcgenerators1607 This engine bay was designed for the 250/292 inline sixes. V8s were moved far aft for weight balance. Since this truck has a heavy permanent load, moving the engine forward is a good thing. It has a 280 frame Lima MAC PTO driven generator in the bed plus a 7 CFM Champion compressor and a fully enclosed work body. Right now, 8600 pounds.

[@affordabledcgenerators1607]

@@keithjurena9319 Cool! CUCV trucks are the best. I think the manufacturer just kept the trans and tcase in the same location. Both bellhousings are going to land in the same spot. The V8 just appears to be further back. Im just advocating that as you are now going to run into clearance issues with a mechanical fan or resale if someone looks at the engine being moved forwards. Thats all.

[@REDXIII1331]

This was very help information to me as I am doing the same swap on my truck cucv m1008 I have the same transmission but re-using the np208 so my adapter wouldn't be the same your using but it still similar as it goes

[@J4riel]

Right on man! Good luck with the swap! I haven’t regretted anything and still runs great! That overdrive and lockup are definitely some freeway pleasantries!

[@bowtiebuilding]

@TecSniper What adapter did you go with?

[@thomasdeardurff6126]

Can you post where to buy the shift linkage? That would be great. Awesome video, thank you!

[@J4riel]

@@thomasdeardurff6126 your welcome! Thank you! I bought the universal shift linkage from www.shiftworks.com. If comes to you straight, you just bend and adjust it all how you need it.

[@stephenmckinley8855]

great video idk why you don't make more

[@J4riel]

I do ask myself that, I’ve done things here and there and should post updates. Just busy I guess. Thanks fer the comment

[@speedbuggy7240]

6t5, thank you for the vid. It's gonna help me a lot. Was your 80 brand new? I'm gonna do the same thing in my 69' chevy K10. But I'm gonna put a LS 6.0 in as well. I'm thinking that I shouldn't have to buy the same computer control that you did, because I'm using the 6.0 wire harness. Rite? Can you give me the name and number of the garage that did your tranny work? So, if I can't find someone local to do the work then I could send it to them. Thanks.

[@J4riel]

The 4l80e was found locally, it was used had about 70K on it. The shop was henderson transmission in henderson, nv. 702-566-6666. If you have the wire harness for the 6.0 LS then you should be good, just make sure your tuner knows everything about your drivetrain so he can program it all up .

[@corbanmadson7239]

This helps so much! I'm actually doing the same to my 77 and I can't find much help.

[@J4riel]

Cool deal! Ya it was the same when I started. Just researched and trial and errored. Glad the vid helps👍

[@buggzo]

Also researching for a 77 vandura. Wondering if it's best to just go with a LS instead of the stock Sbc but mainly just for better gas mileage.

[@rifleman7313]

Is it possible to swap a 6L80 Transmission behind a Classic 350 SBC? I could use a 700r4 a turbo 400, or a turbo 350. However I like the extended gear ratio range offered by the 6L80 with the extra gears. Thanks for any thoughts or advice.

[@J4riel]

The 6L80 was built for the LS platform so it ‘should’ bolt up to the small blocks fine. But I think that’s where the easy part stops and all the research and adapters and buying this and that just to make it work would be a pain. I read where the 6L80’s were never really made for drive by cable so trying to mate that thing up to a carb setup might be a PITA. In my research in the past, if you are going to try and run a small block but ditch the carb to mimick the LS platform in the intake area you’ll be ahead to just go straight to the LS motor swap or use a 4L80 as I did. Hope that helps.

[@sparkyreddevil]

Great video. Would you be able/willing to post the list of parts and sources needed for the conversion?

[@J4riel]

Thanks for watching. I really dont have any of that written down, I tried covering all my big ticket items with particulars and some company names in the video to help point folk in the right direction. If there is anymore questions of particular areas I'll just answer them here. Thanks again.

[@CaudillPat]

I’ve got an 85 K10 that I have a 383 stroker for. Im for using the MSD Atomic EFI and Distributor for fuel delivery and spark. I have a 700r4 that needs gone through. I can have that rebuilt or convert to an electronic transmission while I have everything out. Would you the 4l80 again? Another set option maybe. It’ll be a daily driver but It’ll have a bass boat behind it from time to time.

[@J4riel]

Absolutely would do it again. About a year later I converted my 65 el Camino to a 4L60e using the same computer. Knowing you got a 4L80e for towing and sittin behind a stroker (which is what I have in the truck) is def piece of mind. No TV cable to deal with is also a plus👍

[@cycletimesolutions7324]

Great job, thanks for sharing.

[@bibleortraditions]

Very good video. A lot of good info in a small amount of time. My 74 K5 Blazer is screaming for a new transmission. IMHO, the 700R4 is junk for high HP/TQ applications. I am looking to hook a 396 stroker to this 4L80E. After a few years, are you happy with the results? A low 1st and a high overdrive? I appreciate the info and any advice. Thanks.

[@J4riel]

You would love this setup! I have never once regretted this setup decision, it would work great with your blazer. I flick the key and this whole setup roars to life and is reliable as ever. I don’t use this to rock crawl or anything major, it’s a weekend truck with some weekend muddin, carshow’n and dirt road kinda fun. I love it.

[@bibleortraditions]

@@J4riel Thank you so much!!! I agree. My '74 is retired. Going to car shows... get togethers.. and champagne brunch.

[@J4riel]

@@bibleortraditions right on!! Ya unless you baby that thing, hooking up a 700r4 to some high Hp or torque motor you will detonate that trans.. I’m happy with my setup

[@guysmiles2822]

Appreciate the video. Was wondering how you wired up the neutral safety switch and reverse lights? Doing the same swap into a 3rd gen firebird. Did you use the PRNDL wires on the 4l80 and splice them into the trucks wires? Gb

[@J4riel]

Hey Guy thanks for the comment. I kept the column shifter so no extra wiring for the lights and neutral switch. The only wire connections to the trans was the pre built harness I got with the computer controller from hgm electronics👍

[@hunterbianco2586]

Thanks for the video. Do you use an early or late model 4l80? I have one out of a 94 suburban 2500, about to do the same swap

[@J4riel]

Thanks for the comment👍 if I remember right, this trans came out of a 2001 or 2002 Silverado 3/4.

[@kellyhines5170]

Are you using the factory tach and feeding it the tach signal from your HEI distributor?

[@J4riel]

I installed a small sun pro tach 2 1/4 and put it in the dash where the clock was. I just did some whittlin’ and made it fit. Getting the signal for that tach from the distributor, also have the computer’s tach wire installed on the same line. Both have worked fine 👍

[@kellyhines5170]

@@J4riel Im using the factory pcm to shift my 4l60e on a 2002 4.3 converted to a carb and have it shifting but not at the optimal times the rpm gauge is bouncing and the signal from the pcm is sending it the bouncing signal. I have the tach feed from the pcm wired to the HEI ans im thinking the 2002 pcm uses a signal from the crank sensor that my replacement 4.3 didnt have so im going to try a tach adapter from msd to see if i can clean up the rpm signal. If i can I will have successfully carb swapped a 4.3 using the stock computer if not the fuel injection is going back in..lol Thanks for the reply great job on your video.

[@chriskeller90]

Great video. How much clearance do you have between the tunnel and transmission. Trying to find a floor shifter that's compatible

[@J4riel]

Thank ya, actually there’s about 4 to 5” in gap. More than enough room for pretty much most floor shifters and cable routing 👍

[@chriskeller90]

@@J4riel thanks for the help. gathering all my parts for a similar conversion right now.

[@J4riel]

@@chriskeller90 right on man! 5 yrs in and I’m still glad I did it. Well worth the extra work

[@pmotorsports8276]

You wouldn't have to elongate the hole on torque converter if you put the other bolts hand tight it would have to line the third one up

[@J4riel]

It was the first bolt I tried starting, finger tighted the others came back to it and it was still off. Verified TC and flexplate was in line and nothing jammed or seated wrong. Pulled other bolts out to switch them around verifying all bolts were the same. Spun the TC around to try other mounts and got the same thing on same flexplate hole, others lined up fine again. After about an hr messing with this, I just chocked it up to maybe a flexplate hole drilled slightly off and just took a dremel to it. I still check things under the truck every few months to make sure everything is fine and so far so good.

[@michaeluriostegui7930]

Awesome video man! Would this same process work with a 454 as well?

[@J4riel]

Thank ya! I’m pretty sure that using a 454 would be pretty close to identical 👍

[@k5hoss]

Hey bud, I'm a bit lost on what Trans to get. I have a 6.0, going to mate a 4L80e and purchased the Adapter kit already for 205 to 32 spline. But is there 3 transmission types for the 4L80e? 4x4, slip yoke & flange?

[@J4riel]

I really only know of the 4WD and 2WD types for the 4L80e. I’ve actually never heard of slip yoke and flange type for the 4L80e. Sorry it’s not much help, maybe someone else with more knowledge of these trans can add more information.

[@k5hoss]

@@J4riel thank you, maybe someone will chime in. I was just reading that there is also different shaft lengths.

[@J4riel]

Ya you will more than likely have to modify driveshafts. Once I had everything in, I went to my local driveshaft joint and they told me what to measure and where and then recommended the flange setup I have, they built it perfect.

[@jimmoriarity8496]

I just put a 350 from a 77 suburban in my 94 Silverado. I can’t get the converter to come back flush against the flex plate. Thinking I can just get a different converter because the stock one won’t allow it to slide against the engine anymore

[@J4riel]

What trans?

[@jimmoriarity8496]

@@J4riel 4l80e

[@J4riel]

That is kinda weird. I don’t remember reading about any differences on parts of those years, maybe someone here can chime in with some info

[@metalbill]

6:20 upgrade to 3/8 by kink the bend to reduce flow?

[@J4riel]

Naw these are 3/8 all way to the cooler and back. Temps hover around 150-180 when cruising 👍

[@metalbill]

@@J4riel yeah but it’s linked.

[@jtp682]

Hi, can you tell me what you are using for electronics for shifting?

[@J4riel]

HGM Automotive Electronics, the compushift pro. 👍

[@wyattcheetham8869]

Any idea of a ballpark mileage change I realize it's now been a long time but thats the main reason I want to swap my k30 is because it's a turbo 400 with a big block and by the time you figure out all of that math I could tell you it's a sad sad single digit mpg number

[@J4riel]

I haven’t really done the math but I’m probably around 10-12 miles per gallon. Lucky for me this is just a play truck and not a daily driver 👍

[@gabrielarechiga70]

Any chance do you have the shops name and location? Thanks

[@J4riel]

Henderson Transmission. Henderson, NV 👍

[@jtp682]

hi, I noticed that you used a transfer case adapter. another guy on here just bolted his straight up to a 203 case that came with a TH400. he also suggested using a 2x4 tranny instead and just changing the output shaft for 4x4. he suggested it because square body transfer cases dont have a place for the second speed sensor (which is included on the 2x4 tranny). seems less exensive than your build.. what do you think?

[@J4riel]

I have heard that 2 wheel drive trans will work for this type of swap. I basically had an SM465, NP205 and a 4x4 4L80e and researched how to swap a 4L80e to this NP205 that I already had. I did have to add a speed sensor to the trans 4x4 trans as bit the trans ship basically knew what I was doing, they rebuilt it and took care of all that for me.

[@jtp682]

@@J4riel cool, thank you for the reply

[@QdotRich]

Great Video! Do you know what year 4l80E you got for the swap?

[@J4riel]

Cool Boy Trenton ya mine was an ‘02. I ran the numbers on the case.

[@QdotRich]

@@J4riel okay cool! I'm definitely about to follow your swap!!! Thanks for the info! I'll like to get like a 2200-2500 stall though. Maybe 3000

[@J4riel]

Good deal. Mines been done for a while, I’ve been driving it everything is still great on it. I actually have this behind a 383 stroker so the trans shop recommended this stall of torque converter. It everything works fine, running 6” lift on 35s and a 4.56 gear ratio.

[@QdotRich]

@@J4riel Okay, good to know I'm definitely going to follow your swap through and through. My tires are 33s with 3.73, I may need to go 4.10. I appreciate it! The trans going in for sure!

[@Kurnacopia]

How do you feel the np205 performs in 4 wheel drive? Are you satisfied with the gearing or would you recommend a doubler for lower gears. I am trying to make that decision now and its driving crazy. Thanks!

[@J4riel]

I would say depends on what kinda wheeling yer doing. Mine is a weekend truck, I don’t really rock crawl or do any heavy duty wheeling (running the 10 bolt axles). I hit some mud, dirt roads and hills in the desert and the 205 has done just fine. I have done all this with the 208 in it but I don’t miss any of the lower gearing it had. For my application and use I am happy with the 205 as it is👍. Best of luck in yer build man, these 205s are stout!

[@Kurnacopia]

Thanks so much for the reply. I am torn right now between building a 203/205 doubler, finding an NP241 passenger side drop, or just staying with just a 205. I swear i flip flop about 5 times a day. Mine will be a weekend truck, but I want to build it tough while I can. Your input is greatly appreciated!!

[@tomteague6476]

Do you know if your HT383 is a single piece or two piece rear main? I am really surprised to hear that the 4L80E bolted right up. Several sites tell me I need all manner of bell housing spacers, dowels, special flex plate, etc.

[@J4riel]

Def a single piece rear main. Ya it bolted right up no issues or extra spacers needed. I have a 65 el camino with a mid 70s block 2 piece rear main, I bolted a 4l60e up to that block just fine, no spacers either. That 4L60e was a very late model 700 tho, it had the rainbow cast mark, single case but was the electronic version.

[@XXRUGER280XX]

I am putting a 4l8oe np205 combo in my 84 k20 burb can't wait great video is the reluctor wheel needed?

[@J4riel]

If it’s a 4WD trans and you want a computer to shift it then yes. I think 2WD 4L80e has the wheel already. The reason it’s missing in a 4WD trans is because the speed information is received from the speed sensor in the transfer cases I believe.

[@GRACEVENTURES]

i have an 83 k10 with a 454, th400 and np205....really want overdrive am considering doing this swap. would it basically be the same process with the 454?

[@J4riel]

I would def recommend the 4L80e, should bolt right up to it just fine. What you want to do should be the same setup I have 👍👍

[@GRACEVENTURES]

@@J4riel that's what I thought. I may try to find a cheap used one. Have it rebuilt and put in all at once at a shoo

[@J4riel]

@@GRACEVENTURES that’s a good move. The shops nowadays should be able to do all that, I just don’t have time and patience to deal with that. I’m still enjoying that setup👍👍

[@kylewest100]

When it was all said and done with do you think it was worth it? Also where are you located I’d be interested in having the shop you had do this do it to my suburban.

[@J4riel]

It was worth it still, I had disposable income at that time so basically it was easy. I just had to research and click to put it in the cart. Different story now. The shop was the transmission shop in Henderson, NV.

[@kylewest100]

@@J4riel I’m in SC so that’s way to far but I still plan to do this. I’ve actually been kicking the idea around for a while now. Glad to see someone has actually done it. I feel like the SBC is more than good enough so I don’t really see much reason to LS swap my trucks but I’m sick and tired of 700’s and 4l60’s. The 4l80e has got to be better in every way than a 700/4l60. Pretty sure the gear ratios are better as well

[@J4riel]

Ya def too far lol. This is a stroker so it does pretty good, didnt wanna be tearin up any more 700s. I also have the 4.56 gears so everything is right in line 👍

[@johngerman4230]

How did you do it?

[@tonyhernanandez8285]

DID YOU HAVE ANY PROBLEMS WITH 205 T CASE SHIFTER LEVER ? BECAUSE I GOT A 1971 K10 I SWAP A 700R4 AND HAS 205 T CASE AND NOW I CANT SHIFT IT TO 2WD OR 4WD HIGH. I CAN ONLY SHIFT TO 4WD LOW AND NEUTRAL. IT SEEMS LIKE A NEED A LONGER SHIFTER LEVER THAT GOES ONS THE T CASE. IN ORDER TO SHIFT IT TO 2WD OR 4WD HIGH. THANKS FOR ANY INFO

[@J4riel]

I twin sticked the 205 I have, all brand new. Might have to crawl up under and see what’s jamming it up while someone up top shifts the 205 for you.

[@chclark235]

Great video thanks

[@J4riel]

Right on man!! Thank you!!

[@GTOC-iq9gb]

Did you had any clearance issues on the front drive shaft and the transmission oil pan?

[@J4riel]

No clearance issues at all. Took the truck into the driveshaft place, they measured it up, built it and I installed it no prob.

[@calebvessey4289]

Hey sorry if I missed this in the video but what stall is you torque converter? Thanks

[@J4riel]

Just a stock 1800-2000 rpm low stall speed. The part number is a GM81 👍 works good still.

[@Parker_Garage]

Hey man can you measure how far back the output shaft of the 205 is from the back of the engine? I’m trying to push my 205 back over a foot by converting it to an automatic 4l80 to improve the front driveshaft angle. Thanks

[@J4riel]

ParkerTC I got a 40 1/4” measurement. This is. It including the yoke, just the face of the bezel on the output of the 205.

[@Parker_Garage]

6t5 thank you!

[@RogueKnight33]

What did the shop charge for the transmission and t case work?

[@J4riel]

Built trans for performance with lock up stall, rebuilt t-case and machined t-case to accept the new adapter to mate to a 4L80e, total was $1900, 2018 dollars.

[@travis1572]

How much bigger is the 4l80e bellhousing compared to a turbo 400 ?

[@J4riel]

I don’t know if there is a difference, I’ve never had a turbo 400 tho so I can’t reference.

[@michaelskowronek6253]

I’m looking to do the same swap with mine but with an LS and a NP241 Tcase, my question is can you still use your stock driveshafts

[@J4riel]

I had to actually get new drivelines front and rear when I went to this setup. I paid about $800 for both drivelines.

[@kennyhay6258]

I have a 86K 10 four-wheel-drive pick up I am hearing a clunking noise with my transfer case I just had the transmission rebuilt what should I look for hopefully you can help

[@J4riel]

Could be anything, did you hear a clunking noise before rebuilding the transmission?

[@497843553]

Hey brother can you just give me a total of what you spent for the parts. so i can see if thats the way i want to go

[@J4riel]

Hey Ron, I can give you a rough estimate on the items. This was done towards the end of 2018, so with all the inflation bullshit nowadays it may be a lot more. I switched to a NP205 so theres more cost involved in that like machining and new sticks to control and such, but heres a quick list. Computer controller = $1000 2 new drivelines = $1200 14 qts trans fluid = $125 (I had the 4L80e rebuilt =$1700) you'll be looking for a different crossmember and might have some exhaust rework needed to fit too. I went this route instead of gear vendor. I wasnt too keen on that whole setup.

[@davidbrantley4567]

What yr 4l80e did ya use?

[@J4riel]

I was told it came out of a 2002 Silverado 2500.

[@colehumrichouser5211]

I’m pretty interested in this setup for my 85. If you don’t mind me asking. How much was it for you to do this swap.

[@J4riel]

Hey Cole, I am actually at about $4500-4800. But I chose to rebuild both components and bought most parts brand new (I don’t have patience to search out and clean old stuff) I did all the labor though. I know most people can’t swing something like this financially but will try and answer any questions I get on this.

[@colehumrichouser5211]

6t5 honestly that’s not bad considering the savings in fuel you’ll get in the end. With getting a lot of stuff new and having a shop rebuild everything that’s what racks up the price but I don’t see that being too expensive. Thanks man I appreciate the response

[@J4riel]

You got it! I got about 3500 into the 65 elky behind me there in the garage. I did the 4L60e swap a few months back, that overdrive is some pleasant stuff! The elk is waaaay more bearable to cruise now! Take care

[@ArmandoDuarte-c6s]

What gear do you have?

[@J4riel]

The axle gears? They are 4.56, running 35” tires 👍

[@ArmandoDuarte-c6s]

@@J4riel cool thanks your video help me out a lot

[@ze_german2921]

what is the purpose of a twin even a trip stick setup for your transfer case?

[@J4riel]

Allows you to independently shift the front and rear differential. Example, you can use only the front axle and put the rear is neutral so you can make very tight corners. It allows you to put the rear in low gear without the front axle, allowing you to poke and crawl around without all 4 wheels. There are probably other pros that folk could chime in with. The stick setup will not allow you to shift one axle in high and one in low, so no worry there. I can’t elaborate on a trip stick, I’ve never heard of one.

[@shannonlove6156]

Could you of used your stock transfer case shifter?? I like how mine looks in cab

[@jamesbroderick5157]

I have a K5 blazer with a 6.0Ls carbed and msd ignition. Mated to a 700r4 but that gave up pretty quick so I got a 4x4 4l80e. What do I need to get in order for this trans to work?

[@jamesbroderick5157]

COMPUSHIFT sport TCM, non IMS harness,TPS kit for the carb, and do I need the acculink bracket for the Lokar throttle cable?

[@jamesbroderick5157]

What range selector do I get for the factory blazers column shifter?

[@J4riel]

I got a 4x4 4L80e as well. What I know I had to do was get a rear speed sensor installed in the trans because late model trucks they get the speed information from transfer case. I actually got pretty lucky and took that trans, 205 t-case and the adapter kit to my local trans shop and they basically hook it all up for me. At the time $2000 cash. All I did was throw it up in the truck👍

[@jamesbroderick5157]

@@J4riel awesome, what’d you tell the shop you needed done?

[@J4riel]

I had the np205 and the advanced adapter kit and told him I wanted to mate all this up. He took the 205 to a machine shop and they bored it out to spec. I got it all back. Rebuild on a 4L80e, 205 and machine work $2000 in 2017 dollars.

[@jeffreycronk9319]

Did you have to lengthen and shorten your drive shafts?

[@J4riel]

Jeffrey Cronk I did have to have news ones made (with bigger tubes) since I changed all the equipment but to be honest I dunno what the difference in measurements were. After everything was in the driveline guys measured and built them.

[@jeffreycronk9319]

Also what is the hp output of your engine, and the fuel economy difference you noticed, I just have a th350 at the moment.

[@J4riel]

Jeffrey Cronk it’s an HT383, the documentation says 323HP, 444TQ. It’s a weekend truck so if I had to guess on fuel economy it’s about 10-12 stop and go and about 14 highway.

[@jeffreycronk9319]

Does the compushift computer allow for "semi-manual" mode so you can make it go through the gears with a stick if you need to?

[@J4riel]

Jeffrey Cronk if you manually shift it to 1st it’ll stay there. So if you have like a ratchet shifter and you bang through the gears the computer will know you are manually shifting and let you have it until you put it back into D.

[@jonathonjensen7989]

6t5, are you happy with your 350 setup?

[@J4riel]

Jonathon Jensen actually this is the HT383 stroker I bought from jegs. I swap motors about a year before the 4L80e swap and didn’t have time to do an LS, I needed it done fast. I haven’t regretted not going LS, it’s a great motor.

[@jonathonjensen7989]

@@J4riel great to know, thanks for your input

[@meu3374]

Is the 205 supported in any way

[@J4riel]

No just connected to the adapter off the trans and driveline.

[@88classic]

Can u do this with not 4 wheel drive? Rwd only?

[@J4riel]

Pretty much, just disregard anything dealing with the transfer case, the trans crossmember on 2WDs mount to the trans itself (not a Transfer case)

[@chastblind7606]

Where did you get the 4l80e

[@J4riel]

Offerup, locally harvested 👍

[@chastblind7606]

@@J4riel man I never have any luck on that or Facebook someone always beats me to it

[@peggyk2474]

Would want to sell your "w" style crossmember i need one for my project im in Oregon and cant find one

[@J4riel]

Hi Peggy very sorry but all that sold a while back with the TCase and everything. Good luck with your search!

[@mattlane2282]

But why... it's a k10... running k10 axles...

[@J4riel]

I don’t really bang on this thing hard. Some weekend off-roading is about what I do.

[@shannonlove6156]

Did you use a 2wd tranny to 4wd