i have a 5.3l in my tahoe with almost 70k miles, i wanna swap it out for a rebuilt 6.0l lq9 block. what i was told when i called to buy they said the lq9 comes with everything but the coils and intake manifold. i was woundering will all my parts like my intake manifold, long tube headers from my 5.3 fit? Also what will i need to do the swap.

thanks, Renaldo

 

the short block swaps right over. you can reuse your intake, headers, coils, etc. you will, however, want the LQ9 injectors (or bigger). you can even reuse your accessories.

 

exactly

 

oh noway, thats great... what about the pcm?

 

your current pcm should work with the 6.0

 

Just needs a retune

 

You can use any injectors from a 4.8 to a 6.0, except for 1999, which has smaller injectors. I believe that the 99 flows 19 lb/hr, and the 00 and up flow 24.7 lb/hr. If you're planning a mild cam, I have a set of 31# 8.1 injectors that I will sell you for $125 plus shipping. I bought them a few years ago and never used them, and I will be using a bigger cam than I had at first, so I will need the larger 8.1 42# marine injectors. Shoot me a PM if interested

 

that's good to know. I have the 5.3L and I want to get an LQ4/9 but I didn't want to have to find a complete swap

 

GMFS in the house!

I am starting to piece together my 6.0 swap. Still waiting to find a deal on a block.

If I understand correctly, I can use all my 5.3 parts, but will need to buy bigger injectors and have to re-tune my PCM?