Gen V L83 swap in OBS Tahoe

vannatta20 · Jul 8, 2017

T case output gear needs to changed. If you have a 4l60 then change the gear to the one the 4l80 uses.
GM NP246 Transfer Case Input Shaft.32 Splines for the 4L80E TransmissionPart Number: 19019

You must be registered for see images attach

jmcustom · Sep 17, 2017

vannatta20 said:
T case output gear needs to changed. If you have a 4l60 then change the gear to the one the 4l80 uses.
GM NP246 Transfer Case Input Shaft.32 Splines for the 4L80E TransmissionPart Number: 19019

You must be registered for see images attach

Hi vannatta, I have a 99 2 door Tahoe and I'm picking up my gen V lt1 mated to a 6l80 today. I'm glad I found your thread!

Sent from my 2PZC5 using Tapatalk

vannatta20 · Sep 25, 2017

Did you get the LT1? Small update but important. I got the 4x4 working. The original neutral safety switch would not fit to the 6l80e. I by passed it but a small yellow wire on the connector need to be grounded for the t case to know its in neutral. I grounded that sucker and now the 4x4 engages. Can't wait to test it this weekend!

vannatta20 · Oct 10, 2017

LT1 intake fit great!

You must be registered for see images attach

vannatta20 · Oct 10, 2017

Caddy seat versus stock seat

You must be registered for see images attach

joseg13071 · Oct 10, 2017

vannatta20 said:
LT1 intake fit great!

You must be registered for see images attach

coming over from fb post. I have the l83 8l90 combo. trying to figure out how to make it work... whats the easiest way to go on the wiring harness? i dont care too much about gauges working. also what e fan setup are you running?

vannatta20 · Oct 18, 2017

joseg13071 said:
coming over from fb post. I have the l83 8l90 combo. trying to figure out how to make it work... whats the easiest way to go on the wiring harness? i dont care too much about gauges working. also what e fan setup are you running?

I can do both harnesses if needed. If you keep the ABS your speedo will work. Coolant temp and oil pressure will work if you add the original senders to the new engine. Fuel Level will work as well. I am working to get the tach as well. PM for more info if you like.

vannatta20 · Oct 18, 2017

I did just did 500 mile road trip from Vegas to Utah. The Truck did great. I got 17-18 mpg without DOD engaged. Truck drove effortlessly and we even camped in the back of it! I really like the new seats. The truck is serving its purpose great!

You must be registered for see images attach

Nef.t · Nov 10, 2017

I just bought a 5.3 l83 with 6l80 complete with harness and computer. I call a place that make standalone harness for gen v and said for my year truck(98) I have a lot of trouble. And recommend to got with an older motor. I was hoping you can give me some insight on the swap. And also how much do you charge for the harness rework and if you sell the mounts

vannatta20 · Nov 20, 2017

Nef.t said:
I just bought a 5.3 l83 with 6l80 complete with harness and computer. I call a place that make standalone harness for gen v and said for my year truck(98) I have a lot of trouble. And recommend to got with an older motor. I was hoping you can give me some insight on the swap. And also how much do you charge for the harness rework and if you sell the mounts

You can pm please.

Gen V L83 swap in OBS Tahoe

vannatta20

Newbie

jmcustom

Newbie

vannatta20

Newbie

vannatta20

Newbie

vannatta20

Newbie

joseg13071

Newbie

vannatta20

Newbie

vannatta20

Newbie

Nef.t

Newbie

vannatta20

Newbie

Similar threads

Latest posts

Staff online

Members online

Forum statistics

Share this page