LSfan70s

Hi guys, I just bought a 6L truck engine with a 4L80 atached to it.

It is 4x4, so what parts do I need to buy to make it 4x2?

Who sell those parts? And who sell them used?

Its for a budget project.

Thanks for any help.

TheLS1Kid

iTrader: (12)

You just need a 2WD extension housing.

I have no idea where you can get a used one. Maybe a junk yard?

LSfan70s

But I've heard I also need to change something in the internals. I am not sure what is it.

Randy WS6

iTrader: (69)

You will need a tail shaft and housing, there all over e-bay ,type in 4l80e

tptransmission

Don't forget the the two wheel drive has an orifice cup plug in the rear of the case were the 4wd is not orificed. Just drill a .040" hole.

GMCtrk

iTrader: (23)

It's a pretty involved swap over I believe and it's said it's easier just to go buy a 2wd trans

forcd ind

iTrader: (7)

just curious if the 4 wh trans has a speed sensor ring on the rear output carrier, i thought they used something in the other case for the speedometer

tptransmission

There is a ring on the output carrier, just no sensor. They use the sensor in the T-case. It is not a difficult conversion just a output shaft and case extension plus the orifice in rear plug.

9000th01ss

iTrader: (10)

4x4's DO NOT come with a reluctor wheel for the rear speed sensor.

For the swap you need these 4x2 parts:

Output shaft
Tail housing
Speed sensor reluctor wheel
Rear speed sensor
Orificed cup plug
Maybe valve body gaskets, I would get a whole paper and rubber kit (usually comes with the cup plug).

Probably around $400 worth of parts depending on where you get them.

LSfan70s

Thanks for the info. I am chacking at ebay.

9000th01ss

iTrader: (10)

I'd check the local transmission hardparts supplier, and the small transmission shops, and ask them if they know any hardparts suppliers.