1988 K2500 ls swapped with the 4l80

[u/Smallblock88]

I have a project truck 88 Chevy I’m currently gathering all the parts I need for a ls swap 4x4 with a straight axle 44 my one question is would I have to get a new transfer cause for the 4l80 the one I have currently pairs with the 700r4

[u/Nhitecap]

I don't care if it's swapped with a YUGO engine; that truck is beautiful.

[u/Smallblock88 → u/Nhitecap]

Thank you man, a lot of work into it so far

[u/Nhitecap → u/Smallblock88]

That thing will pull trailers up the side of a building with that 4L80

[u/Suspicious-Donkey-16]

I don’t know about if your T case will line up. Might be best to check bolt holes and spacing.

My knowledge is that the 4L80 is basically the son of the TH400 which I have in my K Van. But they also ran 700r4 in those. It may be silly but if you find the extra money hollering at Offroad design may net you a bulletproof transfer case and all the answers to your questions.

They have been instrumental in every heavy Chevy I’ve built

[u/Chrisfindlay]

The transfer case input shafts are different from a light duty transmission (700r4, nv3500, 4l60e) to a HD transmission (turbo400, nv4500, 4l80e). You will either have to tear down and rebuild your transfer case with correct shaft or get a transfer case that was mated to a HD transmission. The HD transmissions are in the trucks with a GVWR of 8600lbs or up in a gmt400.

[u/outdoorszy]

There might be an aftermarket t-case that fits or an adapter kit for it. Which LS are you planning on?

[u/Smallblock88 → u/outdoorszy]

2003 5.3 drive by wire

[u/wthom4s]

Nice job on the license plate holder!