i have a 99 ex.cab 1500 and 2 and overdrive are gone. i got a 4l80e out of wrecked 99 2500. what all do i need to make it work in the 1500? i have the 5.7 motor and the tranny is still hooked to it. the tranny has 900 miles on it.

 

torque converter
Dipstick tube
cross member modification
wiring harness mods
4l80e segmented tune
drive shaft and or yoke changed
probably a crankshaft spacer and flex plate

 

will the conveter from the 99 2500 work?

 

Yea you should be able to use it, if its the stock one that's in the 80E.

 

its factory, where can i get the harness and spacer?

 

Read this thread
http://www.ls1truck.com/forums/front...rans-swap.html

 

No need for a harness
https://www.performancetrucks.net/fo...d.php?t=413157

you can find the spacers and flywheels in the classified section.. Ill also see if my buddy still has his..


I printed that out when i did my swap.... Great write up thats for sure!!

 

Wow thats quite the write up very good info

 

thank you guys!

 

He said that it is connected to the 5.7 and it was a 99. Does it not matter that he will be bolting this up to a Gen III and the tranny was for a SBC? Just a thought didn't know if it mattered.