96-99 OBS LS Swap - Everything works like factory!

A quick overview of a 1999 GMT400 platform LS swap. The spider injection vortec engines share a lot of functionality with the 99-02 LS truck platform so you can make cruise, abs, ac and gauges work like factory.
Wiring pinouts used www.lt1swap.co...
ICT billet brackets used:
AC power steering bracket amzn.to/3RJYGBe
ALTERNATOR Bracket amzn.to/3S4DV4F
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CONTACT, SERVICES, SOCIALS & MERCH! linktr.ee/hspe...

[@LT1210]

That’s one of the cleanest swaps I’ve seen. Awesome job.

[@kongchingpow]

This is very helpful! Ive goty.eye on a 98 z71 that has been sitting for 2-1/2 years. I plan on fixing the usual rust, shining it up, and swapping a 6 liter ls into it. This gives me a lot more confidence!

[@williamwicklund4273]

You did how its supposed to be done, clean and proper

[@jayno7641]

That's clean. Nice swap. The underneath view is cool. Completely spotless.

[@jefftarver4777]

Outstanding!!!

[@azhandyandy]

Phenomenal. Great to see how your harness time was rewarded

[@siTTinLo]

Very Clean swap. Well done. 👌

[@bigmikesgarage5627]

Wow, what a nice truck! I love watching you're swaps, you do a really nice job with them.

[@johnnybravo7733]

Absolutely perfect! Keep up the good work

[@arturoELchurro69]

Great build! I have a k2500 seems like LS would be the way to go for reliable power!

[@josephblair8593]

I want to do this to my 99 k2500 suburban replacing a 454.

[@Artoconnell]

Our Results may vary, LOL wow thats fantastic !!!

[@jamesmanxbuggy]

Awesome work brotha!!

[@subarutime5089]

Thats cool i have a nv 4500 in my 06 yukon

[@delbertgrubb1341]

nicely done

[@unknownpaidkillz1896]

I want 99 suburban LS done most definitely would pay him to get mine done lazy lol 😆 😅 😂

[@xxreddmanxx22]

I do want to see u pin a computer even if it takes 4 hrs any tips about to do this my self like the cleaner look thanks for all the info

[@johndenniss6224]

Do you make wiring harnesses to sell ?

[@prestonregannavarro8596]

I would like to buy one if he does.

[@riley3267]

look up current performance wiring, they make amazing swap harnesses

[@mrfishbulb7187]

Superb

[@husqvarna5012]

Need more videos dude

[@miguelgovea8823]

Beautiful work. Do you have a video that shows how you did the evap system?

[@HsPerformanceWi]

just hooked the one hose from the canister to the evap solenoid, simple

[@lilman7821]

Can you do a parts list of what’s needed I have a 96 burban I’m swapping

[@Jay-wn6uf]

Kept it 4x4? Looks like it. Nice

[@TylerCrook-lr7yf]

Like the clean look, how is the mpg, thinking about ls swapping my 2000 c2500 with a 5.7/4L80E

[@DJHunt89]

I’m interested more in the tow haul function.

[@HsPerformanceWi]

Momentary ground to the pcm, diagram is in the video at 6:09 That's all you need.

[@anthonymetoyer2029]

I want to swap a 6.6 w/trans into a OBS 1999 Tahoe LT

[@lit549]

So on the AC, it all was possible cause you run a mechanical fan? I'm running dual gm electric fans and I'm having a hard time getting the AC to work right.

[@HsPerformanceWi]

LS1tech.com has a few threads on making it work, the ecm needs to see the ac pressure via the factory sensors

[@jjtt7408]

IS THE TRUCK FOR SALE / AND IF SO HOW MUCH ARE YOU ASKING / THANK YOU / PS . YOU DID A NICE CLEAN JOB

[@TheLimitedmod22]

Holy cow! Looks like a factory OEM install! Amazing work, sir! What's it cost for you to do this? How much was customer billed? How much time did it take to do this?

[@Nzchimeran]

Hiya, nice truck. What's the colour code for this one? Same colour as mine but sun has faded the service sticker to be unreadable. Much appreciated as I have to do some paint repairs.

[@HsPerformanceWi]

no clue, this was a customer project last year

[@TheBlkac1]

Where are located? I'd like to do a swap on my 2000 Chevy 1500 Express van. Would you be willing to do that swap? I'd like to have the same set up as yours...

[@HsPerformanceWi]

Central Wisconsin

[@miguelgovea8823]

Nice work. Might you be able to give me the part number for the ac bracket

[@HsPerformanceWi]

www.ictbillet.com/ls-swap-96-98-vortec-truck-ht6-a-c-compressor-power-steering-bracket-ls1-ls3-lsx.html

[@gerardolopez5875]

What about on the 89 obs , moonies gauges?? Will they work just as the 95

[@HsPerformanceWi]

That I couldn't tell you, never worked on one.

[@markwilson2664]

Was your truck origionaly a spider injection truck

[@HsPerformanceWi]

customer truck, but yes

[@DankMatt]

Can h show how u used the bulk head connection and where they go

[@HsPerformanceWi]

i didnt make any changes to the firewall bulkhead

[@ericlaker1983]

Why change 383 to 6.0. Seems dumb. It had a good engine. Allot of work for ?

[@HsPerformanceWi]

Thanks for the helpful comment!

[@richcollins513]

3:30 yes it was heated seats 50A, How did you get TPS to the trans?

[@HsPerformanceWi]

all the obs trans wires were pinned into the LS computer

[@dwayneflint8332]

Reference source on Lt to Ls pin out chart would be very nice

[@anthonymetoyer2029]

What do you charge to swap?

[@sluggedoutgoldanddiamonds7697]

Did you change the trans also or it’s original?

[@HsPerformanceWi]

original 4l80e

[@Doseofzay]

What size belt did you end up going with?

[@HsPerformanceWi]

listed here www.ictbillet.com/ls-swap-96-98-vortec-truck-ht6-a-c-compressor-power-steering-bracket-ls1-ls3-lsx.html

[@Chicothadonn]

How did you wire up the abs module ?

[@HsPerformanceWi]

you dont mess with any of that wiring

[@Chicothadonn]

@@HsPerformanceWi some of the wires for example, 2 purple 1 white and 1 brown wire all have pins at the end are just there all from the original obs harness

[@Chicothadonn]

Everything is plugged in its wires sticking out from that leg of the harness

[@HsPerformanceWi]

couldnt tell you offhand, study the diagram everything worked on this one swapping pin for pin one at a time www.lt1swap.com/gmt400swap/

[@Chicothadonn]

@@HsPerformanceWi i been looking but i cant find any information, but thanks anyways

[@collinwilliams5420]

I have 2000 k3500 5.7 with a 4l80e. Will that trans work with a 6.0? Or will i have to get one from an ls?

[@HsPerformanceWi]

all 4l80e's will work with a 6.0l. Early ones had both cooler lines up front, 1997 and up 4L80E's are all the same. The only thing different between sbc and LS versions is the converter shield

[@collinwilliams5420]

@HsPerformanceWi sweet so my 2000 sbc 4l80e would bolt up and work with the 6.0 wiring and ecu ect? Everyone is telling me I had to get a ls specific 4l80e since my sbc trans wouldn't working with ls wiring and computer.

[@HsPerformanceWi]

I don't know where you are getting your info, but this is fairly basic common knowledge in the gmt world. 4L80E's from 1997 up to when they stopped making them in 2013 are all the same

[@collinwilliams5420]

​@@HsPerformanceWiI'm normally a car guy, I've used manuals in my projects and daily drivers my whole life then kids came lol the "truck" guys at work were telling me since I still belive in conversation over Google but you tube for the save. I appreciate the info it really saved me some money.

[@sluggedoutgoldanddiamonds7697]

Does the 4x4 still work

[@HsPerformanceWi]

Everything works like factory, hence the video title

[@masegauntt9085]

What trans did you pair it up with??

[@HsPerformanceWi]

The original 4L80E that came in the truck

[@jaydub3769]

What alternator did u use for the bracket

[@HsPerformanceWi]

bracket is in the description, alternator is stock from the truck

[@jaydub3769]

Just to clarify the alternator off of the 5.7 right?

[@HsPerformanceWi]

@jaydub3769 correct. Either the 5.7 or the 6.0L alternator will work, but the one from the 6.0L was a larger framed 145 amp unit and the AC line was a bit stretched around it and we opted for the smaller one

[@jaydub3769]

Thanks for the info going be swapping my 99 crew cab and want to start ordering parts definitely buying the same brackets

[@user-mv7lq4pr8k]

Which kit is the alternator brackets?

[@HsPerformanceWi]

www.ictbillet.com/s10-ls-swap-alternator-bracket-ls1-ls3-lsx-lq4-lq9-4-8l-5-3l-6-0l.html

[@user-mv7lq4pr8k]

​@@HsPerformanceWithanks a lot man. I seen that one but wasn't sure since they said it was for an S10. This is hands down the best OBS LS swap I have seen. Im pretty much copying your swap on my 97 K1500 except I'm pairing the LS up to my factory 5 spd. Thanks for the reply.

[@edgarvargas8018]

Where are you located?

[@HsPerformanceWi]

Central Wisconsin