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Trying to do this swap and buy a used motor. what all will swap over from my 4.3 brackets and pumps etc. will the starter and ac pumps power steering swap over?
i know i will need the harness, computer tuned for a v8, frame and motor mounts. what all else?
truck is a 99 nbs 2wd auto.
have you read the sticky at the top of this fourm? Lots of good info about your exact swap
Yea i read that but it seemed to be more for a 6.0, also just read duckys thread but still not exactly clear on everything.
I guess i just need to purchase the motor and then go from there on what i dont have and will need
4.8,5.3,6.0 will all be same swap wise, if you are familiar with SBC's it's like 305 350 400
When you buy the motor. Make sure you hgave EVERYTHINGGGGG. I mean make sure the harness is still attatched as in everything. Make your life a lot easier
well im probably buying the one in the classifieds here. Just need to know what brackets and accessories ill need to have my power steering alt ac oil pump all that to work.
The sticky said i will need new fuel lines correct? or is that 6.0 related just wonder cause thats the first ive heard of that.
Also a/c how will i go about hooking it up will my ac compressor work just mount it on the new 5.3 bracket? same with alt?
Hardly any of it is the same. If you swapped in a Vortec 5.0 or 5.7 all of the front stuff would swap but since you chose the best route to swap to LS then all the stuff has to be changed.
ok well i dont plan to do the swap in a weekend i plan to get all the parts together before even attempting to do this.
ill post back here soon as i have another question so i can gather all my info.
If you have everything. It will only take a weekend. Its so simple. Looking back on my swap, woulda taken 3 days max with some as little expertise as myself and buddy with GENIII swaps, if we would of had everything. But I didnt, so I had to play cat and mouse trying to get parts
all the belt drive acc will need to be from the 5.3, i dont think anything will swap from the 4.3....maybe the power steering, but thats prob the only thing, the alt, ac/compressor i know for a fact are different
The alt is different? or just the bracket can i get the 5.3 bracket and use my alt?
Also most of the harnesses i see only have 2 connections to go to the pcm is that how it should be and the rest of the pcm connections come from the body? Cause i know my 99-02 has 4 pcm connections and i believe the 03+ only had 2.
no sure on the alt,
the pcm should have 2 connections, a red and a blue plug, should be the same as the v6 one, the 03 and up will have two plugs too but the will be blue and green
Anyone know what will need to be swapped if i put a DBC motor in my 99, since my motor is the other one TBW
The cable throttle body will work with your 99, but the DBW is a PITA to swap
Anyone got the part numbers for the frame mounts? not the engine mounts
no...they are easy to grab from a junk yard thoQuote:
Originally Posted by static99
Check my threads. Sometimes the junk yards dont know the diff between a 4wd frame mount and 2wd v8 mount. Ask me how I know lol
Gotta another question.
I have a 99 nbs. If i use a 03+ motor what will have to be swapped? a 99-02 intake manifold and throttle body?
Cause i have dbc i believe. so the 03+ would be dbw. I need to know what i will need from a 99-02 motor to use it.
6 to 8 will require all that stuff be swapped anyway.
Either way you'll need mounts, headers, harness, engine, accessories, PCM.
You also need the harness I believe
he'll need the engine harness from the year model of his truck ( 99-02)? with a v8, motor wise i intalled a 6.0 from a 04 escalade. so youre fine on the motor, as acc's theres a few i seen on PT.NET up foresale.
I know what all i need to do the swap. Im needing to know what is needed to put the newer motor in the older truck.
So i can use a 03+ motor just have to put a 99-02 harness pcm and intake manifold throttle body correct? Is that all from the older motor that ill need to make the 03+ go into my 99?
that should be it:)Quote:
Originally Posted by static99
i'm doing the same swap, except mine's 4x4 & manual.
my question is will the harness from a 4.8/5spd work?
also, the trans will bolt up as is, right?
sweet thanks banker
yep!Quote:
Originally Posted by zebra
thanks.Quote:
Originally Posted by banker099
the trans issue was the biggest concern because i didn't know if the LS & SBC engines had the same bolt pattern, but as far as everything i've been able to find out, they do
yeah theres a couple of guys on here running turbo 400 trans with the LS engines
so what year harness do i need i have an 04 v6 that has an 04 motor going in im keeping it cable driven, will an 02 harness work??
not 100% sure, but i dont think it will.
no you need a 03+ harness.
what color are your factory pcm plugs?Quote:
Originally Posted by ramairracer
red/blue or red/green?
red/blue= 99-02 harness
green/blue= 03-06 harness
ok so all i wouldr really need is new throttle and cruise control cable, harness, pcm, accessories, compressor, frame n motor mounts, ac hoses. correct?
the ps pump and alternator are the same. i work at oreillys so i looked part #'s on both v6 and v8