1994 5.7 to 5.3 lm7 swap

[Clayman]

Im new here looking for input on swapping a 5.3 with 4l60e into a 1994 silverado 4x4 that currently has a 350 tbi and 4l60e. The tranny is on its way out so I figured I may as well swap on a new one while im at it. Motor mounts... wiring harnesses... these are things ill need help with most. I haven't started the swap since the truck is my DD but im looking for info and approximate cost for a swap. Ive found a 5.3 for 650 with harness and ecm and a tranny for 750. Is this a good deal? Ive also been told that the ls style AC bracket and compressor won't clear my frame... is this correct? Any info greatly appreciated.

[1bd92]

dont rush it. do as much home work as possible.. im about to drop my 5.3 out of a 2007 chevy in my 92 p/u 5 speed..after 3 months. lol this site helps alot all you gotta do is look and ask .

[Clayman]

Yeah... ive got ALOT more homework to do!!! lol in the past month ive learned alot but im gonna keep plugging along and hopefully ill get enough knowledge and nerve to do the swap!

[HPICamaroSS]

Yeah... ive got ALOT more homework to do!!! lol in the past month ive learned alot but im gonna keep plugging along and hopefully ill get enough knowledge and nerve to do the swap!

Basically did the same exact thing...my tranny was goin out so i did the 6.0 swap with 4l80e. Plan on spending atleast another grand than what you had intended lol thats all i have to say.

[Clayman]

Yeah im counting on it. lol can I use my original transfer case with the 5.3 setup? Im assuming I can since its the same tranny...

[myzterray]

Yeah im counting on it. lol can I use my original transfer case with the 5.3 setup? Im assuming I can since its the same tranny...

yep just make sure u take the 4wd low signal and put in ur ls pcm.

[cottontop11]

yep just make sure u take the 4wd low signal and put in ur ls pcm.

What does that do?

[Clayman]

yep just make sure u take the 4wd low signal and put in ur ls pcm.

Ok I should have said earlier but its the manual shift style... does it make any difference? Sorry all the questions I just have alot of stuff to figure out....

[myzterray]

Ok I should have said earlier but its the manual shift style... does it make any difference? Sorry all the questions I just have alot of stuff to figure out....

I have no idea about 5 speeds..I can barely drive one lol. It's cool to ask questions..that's why ur here..I gained almost all my knowledge about the swap fro. This forum so ask away...

[Clayman]

Its an automatic tranny but manual transfer case... sorry if that was confusing