First LS swap need help already
09-20-2010, 09:56 PM
#1
Teching In
Thread Starter
Join Date: Sep 2010
Location: Newport News Va
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
First LS swap need help already I am now starting to feel a little overwhelmed 
This is my story and to say the least I need some direction. I currently have a 2002 Silverado Extended Cab 1500 5.3L 4x4. About two years ago the engine developed what GM likes to call a pours leak. I just joke it runs on gas and H20. So with 130k and a leaky head I decided that I was going to swap it out for an LS1 engine.
So I also currently have a complete 2000 C5 Corvette LS1 engine. This is where I need some direction. I have been going over the electrical in my head and on paper, comparing pinout of the LS1 with the 5.3L. Can anyone giving me some suggestions on which direction I should go with my PCM and wire harness? How do I incorporate the 4wd when using the LS PCM, or should I remap the 5.3L PCM?
Where should I start a thread of my build to get help with these kinds of issues?
This is my story and to say the least I need some direction. I currently have a 2002 Silverado Extended Cab 1500 5.3L 4x4. About two years ago the engine developed what GM likes to call a pours leak. I just joke it runs on gas and H20. So with 130k and a leaky head I decided that I was going to swap it out for an LS1 engine.So I also currently have a complete 2000 C5 Corvette LS1 engine. This is where I need some direction. I have been going over the electrical in my head and on paper, comparing pinout of the LS1 with the 5.3L. Can anyone giving me some suggestions on which direction I should go with my PCM and wire harness? How do I incorporate the 4wd when using the LS PCM, or should I remap the 5.3L PCM?
Where should I start a thread of my build to get help with these kinds of issues?
09-21-2010, 08:18 PM
#3
Teching In
Thread Starter
Join Date: Sep 2010
Location: Newport News Va
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
JohnJanz
Thanks for the input, that’s the route I think I am going to go with. I spent all last night looking for info regarding the electrical for the swap. From what it sounds like the only plugs that are different are the injector plugs. Could you suggest any good tuner to have retuned the PCM? I have a lot of questions and would like to find one that is will to work with me.....
Thanks for the input, that’s the route I think I am going to go with. I spent all last night looking for info regarding the electrical for the swap. From what it sounds like the only plugs that are different are the injector plugs. Could you suggest any good tuner to have retuned the PCM? I have a lot of questions and would like to find one that is will to work with me.....
09-22-2010, 11:23 AM
#5
Teching In
Thread Starter
Join Date: Sep 2010
Location: Newport News Va
Posts: 23
Likes: 0
Received 0 Likes
on
0 Posts
Eventually i would like to get a dyno tune, but my main objective is to get the LS engine in the truck and functioning properly. I have been looking on LT1Swap.com, he said he can retune to my needs for 75 bucks. I was looking over your web site and notice you also do custom tuning. Will you retune my 5.3L PCM for the LS1 engine, if so how much?
Also, I understand that i can use my existing PCM just need to have it retuned. As far as using the existing harness from the truck, the way i understand it is most of the plugs match up, except for the fuel injectors? Am i correct or could you help shed some light on the harness question....?
Also, I understand that i can use my existing PCM just need to have it retuned. As far as using the existing harness from the truck, the way i understand it is most of the plugs match up, except for the fuel injectors? Am i correct or could you help shed some light on the harness question....?
