Official NBS 4.3v6 to GEN 3 V8 swap Guide

[dlh2006]

A rearend is a great idea, I holded off on mine for a month or two. I mainly tried to point out what is required, a rearend is not required and i doubt your going to break the open diff, i couldnt do it lol! I pulled a 1.9 on the one wheel peel with a pair of ET streets. But like stated above i would swap one out whether it be during the swap or after it.

It says if you have a 99-02 get that harness and if you have an 03+ get that harness.

I personally would just buy new mounts, that way everything will be to factory specs and the engine will not sit higher etc. The price on the mounts really do not justify going through the trouble of trying to get the v6 mounts to work.

Also like stated above you will need V8 lines such as the AC, Heater hoses, radatior hoses. I would go to a junk yard and pull the hoses off that you need, this way it wont cost much at all.

as for as time i did the swap in a weekend. I Installed a cam in the 6.0, removed the stock tranny and pulled the v6 out on day 1 on day 2 I did the install of ot all!

Thank you all for your comments!

If anyone has any specific questions regarding the swap please post it up!

Thanks.

[Awc2007]

A rearend is a great idea, I holded off on mine for a month or two. I mainly tried to point out what is required, a rearend is not required and i doubt your going to break the open diff, i couldnt do it lol! I pulled a 1.9 on the one wheel peel with a pair of ET streets. But like stated above i would swap one out whether it be during the swap or after it.

It says if you have a 99-02 get that harness and if you have an 03+ get that harness.

I personally would just buy new mounts, that way everything will be to factory specs and the engine will not sit higher etc. The price on the mounts really do not justify going through the trouble of trying to get the v6 mounts to work.

Also like stated above you will need V8 lines such as the AC, Heater hoses, radatior hoses. I would go to a junk yard and pull the hoses off that you need, this way it wont cost much at all.

as for as time i did the swap in a weekend. I Installed a cam in the 6.0, removed the stock tranny and pulled the v6 out on day 1 on day 2 I did the install of ot all!

Thank you all for your comments!

If anyone has any specific questions regarding the swap please post it up!

Thanks.

is the process the same on 2007 silverado 4.3 to 5.3 swap