2002 chevy, 4.3 to 5.3 swap...

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03-06-2009, 10:23 PM
zachs92

2002 chevy, 4.3 to 5.3 swap...

here is the start to my swap thread. no pics yet but some info. pics soon to come, maybe tomorrow.

i bought a 2002 suburban, for a parts truck to make the install ez'r.
here is what in goin to use.
5.3
harness
computer
motor mounts
fuel lines
exhaust(unless i get LPP long tubes before the swap)
other stuff that i might need, this will be my first swap so i figured i waould buy a complete donor vehical just incase.

i might make another thread on swapping the complete LT interior over and to also to keep this a motor only thread.
03-07-2009, 10:43 PM
r6z4o6

Sounds like a solid plan. Can't go wrong with the entire vehicle in your backyard or garage. You should be able to take the entire "C1" and "C2" blocks or whichever ones you need out of the back of your original under hood junction block and "reinstall" the 5.3 "C"-blocks into the UJB on your truck, so as to not cut any factory wires for the 5.3 harness. Good luck!

Dig the HD hood.

Got any pics of the 92 swapped interior? (currently fiddling with 95 swap in my 91)
03-08-2009, 01:00 PM
ducky

that will be an easy swap for you because you have the entire vehicle. A year or so back I did the 4.3 to 5.3 in my 2000 truck and it wasnt too bad, just didnt have everything
03-10-2009, 02:41 PM
zachs92

thanks guys, from what ive read its all plug n play...

heres my 5.3, its still in the burb. hope to have it out this weekend.
http://i32.photobucket.com/albums/d1...s92/001-37.jpg

here the 92 interior r6z406....
http://i32.photobucket.com/albums/d1...re021tfyut.jpg
03-10-2009, 02:43 PM
ducky

lol make sure you clean everything before you get it in.
03-10-2009, 03:16 PM
banker099

oh good call on getting a whole donor truck...that will make for a simple swap....and less trips to the salvage yard...good luck man if u have questions feel free to pm me....ive been down this road before :thumb:
03-10-2009, 03:43 PM
zachs92

Quote:

Originally Posted by duckysbht

lol make sure you clean everything before you get it in.

lol yea thats a must, i have to have a nice clean engine.

Quote:

Originally Posted by banker099

oh good call on getting a whole donor truck...that will make for a simple swap....and less trips to the salvage yard...good luck man if u have questions feel free to pm me....ive been down this road before :thumb:

im sure i will be hitting you up, was there anything that you had to do that was un expected.

ive hard that since im using the 5.3 computer than i need to install the steering colum out of the same vehical because of the anti-theift bs in the ignition. true or false??
03-10-2009, 03:49 PM
banker099

i would just have the pcm tuned and have the vats turned off...much easier
03-10-2009, 04:37 PM
zachs92

Quote:

Originally Posted by banker099

i would just have the pcm tuned and have the vats turned off...much easier

hmmm will i have to take the pcm to the tuner before hand to get it tuned and get the vats turned off so i can even start the truck after the swap correct?

i was just planning on a dyno tune.

edit: i just called a tuner, he said to bring in my pcm and he will turn off the vats for $100
03-10-2009, 04:52 PM
banker099

yep...vats has to be turned off before it will start
03-10-2009, 04:58 PM
banker099

and i would rather pay 100 than mess with swapping the cluster and all those wires and stuff....IMO
03-10-2009, 05:45 PM
zachs92

i guess im just going to get a mail order tune from TS&P.

btw, thanks for your help already!
03-10-2009, 08:16 PM
GasGuzzler

VATS is only used on vehicles with chip type keys.
03-10-2009, 08:51 PM
zachs92

Quote:

Originally Posted by GasGuzzler

VATS is only used on vehicles with chip type keys.

ive had this issue before, i swapped out colums and had the dealership reflash my pcm for the new ingintion because my truck wouldnt start. since i will be puttin the 5.3 pcm into the truck it wont jive with the ingintion/thieft system. ive also talked to three different tuners and they said they would have to reflash th pcm to bypass the thieft crap, maybe its not called VATS but it has to be done. also verfied by banker.
03-10-2009, 08:53 PM
GasGuzzler

Yep...you're talking about Passlock. PasslockII, Passlock III, or PK3+.
03-10-2009, 08:55 PM
zachs92

banker,did you have to mess with motor mounts? i wouldnt think gm would move there motor mounts around but never know.

and did you use your v6 converter? i thought about using mine for a slight stall over stock.
03-10-2009, 08:56 PM
zachs92

Quote:

Originally Posted by GasGuzzler

Yep...you're talking about Passlock. PasslockII, Passlock III, or PK3+.

ahhhh haaaa, so vats like you said is for the keys with the small black chip on them.
03-10-2009, 08:57 PM
GasGuzzler

:tvhaha:

Yep.
03-11-2009, 09:48 AM
banker099

Quote:

Originally Posted by zachs92

banker,did you have to mess with motor mounts? i wouldnt think gm would move there motor mounts around but never know.

and did you use your v6 converter? i thought about using mine for a slight stall over stock.

u will have to use the motor mounts for the 5.3 and pull the frame mounts out of the burban and use them in your truck, the 4.3 and 5.3 mount different on the frame

yes i used the v6 convertor until just recently when i put a stall in it, the v6 stall stalled up to about 2100....

and i dunno about pass lock and all that but in hpt its called vats...im sure they just use that term for whatever security system is on the pcm....all u have to do in hpt is select VATS enabled or disabled
03-11-2009, 01:11 PM
zachs92

Its it a pain to get the mounts off of the x-member? I know the 88-98 trucks make you hate the world when you do them.
03-11-2009, 01:14 PM
ducky

its not hard what so ever. So easy. I had to change mine like 3 or 4 times till i found the right ones
03-11-2009, 02:39 PM
banker099

Quote:

Originally Posted by zachs92

Its it a pain to get the mounts off of the x-member?

nope 2 long bolts for each one....simple
03-11-2009, 04:29 PM
GasGuzzler

Nothing like the GMT400 pain in the butt.
03-12-2009, 06:39 PM
zachs92

well i bought my ls1 hot cam today...
03-14-2009, 03:26 PM
zachs92

did alittle more work on the swap today...sorry for poor quality pics, i left my fancy camera at home.
http://i32.photobucket.com/albums/d18/zachs92/027-3.jpg
http://i32.photobucket.com/albums/d18/zachs92/025-2.jpg
http://i32.photobucket.com/albums/d18/zachs92/023-1.jpg
03-25-2009, 05:30 PM
zachs92

finally pulled the motor and trans...
http://i32.photobucket.com/albums/d18/zachs92/015-6.jpg
03-25-2009, 08:52 PM
banker099

Quote:

Originally Posted by zachs92

finally pulled the motor and trans...

and the body...:ugh2:
03-25-2009, 09:05 PM
ma.racing

ha ha bet it was real ez to pull the motor with out the body on it ha ha
03-26-2009, 04:34 PM
zachs92

i figured hey lets hook the crane up to it.
04-06-2009, 08:49 PM
willd74

i want to swap 99 body to 04 frame
motor in 99 5.3 lots of miles
o4 is 4.8 low miles how hard will this be?
04-06-2009, 09:03 PM
willd74

i want to swap 5.3 t0 4.8

i am swapping 99 5.3 for 04 4.8 wiring issues and throttle issues can anyone help?
04-06-2009, 09:05 PM
TDK08

to answer your threadjacking, it would be easier to swap the motors. It honestly easy IMO, just time consuming.

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