Official NBS 4.3v6 to GEN 3 V8 swap Guide

[Jeff Hefler]

Very helpful thread to say the least..Is there any differences doing the same swap but using a 07 Escalade 6.2?

Thanks

[blacstar]

Very helpful thread to say the least..Is there any differences doing the same swap but using a 07 Escalade 6.2?

Thanks

what is it going in?

[Jeff Hefler]

Oh yea i guess that would help..Its going in a 2000 GMC half ton truck...I have bought the 07 6.2 and a 05 6.0 both out of escalades.

Thanks

[jelliott1458]

2002 1500 4.3 60e sht bed std cab

[blacstar]

same. 4l80 will mount about 7 inches further back than that 60e. but that swap has been done many times before. You would follow the sticky and use a v8 harness for a 2002 truck and then conversion box 24x-58x

[3car]

I've read over this thread and didn't see my question addressed. My truck is a 2002 4.3 5 speed 4x4. I know I need a harness from a 99-02 v8 truck as well as a new fly wheel and clutch, but does the harness have to be from a manual trans truck to avoid other issues?

[zebra]

finding a harness from a manual truck will be the easiest way, but you can use either. since you'll have the manual t-case, you don't have to worry about finding one with the electronic 4x4 wiring. also, if you use a harness from an auto, you can pull out the transmission wiring (with the exception of the VSS & reverse). click my sig to find the company i sent mine to (because i didn't feel like fiddling with it). it also shows the jumper you'll have to add to the fuse block for the clutch safety switch (which you can just reuse from your V6 harness).

[3car]

finding a harness from a manual truck will be the easiest way, but you can use either. since you'll have the manual t-case, you don't have to worry about finding one with the electronic 4x4 wiring. also, if you use a harness from an auto, you can pull out the transmission wiring (with the exception of the VSS & reverse). click my sig to find the company i sent mine to (because i didn't feel like fiddling with it). it also shows the jumper you'll have to add to the fuse block for the clutch safety switch (which you can just reuse from your V6 harness).

Thanks for the info. I read over your thread, and Current wiring is about 25 miles from me. Convenient. lolc

[Frenchy]

No. Mine is an auto harness. It already has all the manual stuff in it, just shut off. Plug it in, program the PCM with a manual trans file. Drive truck.

[zebra]

funny... my harness came from an 01 Tahoe & wouldn't start until i figured out the thing with the clutch safety jumper. no power to the starter - just like trying to start without pushing the clutch pedal in.