swift700

iTrader: (3)

Hey guys, I'm looking at getting a backup tranny and this guy is telling me there were 80E's that had a different output shaft spline count. Can anyone confirm or deny this?

This particular one is a '99 4x4 tranny with the top center bolt hole. Strange.

03sierraslt

iTrader: (22)

Thats the first I have heard of that, I know there are different length output shafts but never heard of a different number of splines.

1FastBrick

iTrader: (17)

Drugs will do that to you. 32 spline should be the output on a 4L80E

The only difference is the shaft length between 2WD and 4x4. There are some other minor differences as well.

03sierraslt

iTrader: (22)

There are more then two shaft lengths, but I am not sure what the others are for. There is good website that lists all the trans parts but I forget what it is, Vince told me about it.

Edit- Found the site, there are different lengths for different years I guess. I am actually seeing 6 different lengths. wit trans .com

1FastBrick

iTrader: (17)

All depends on what it was installed in. Slip yoke vs Bolt on yoke, 4x4, the mechanical brake drum on the 1 ton box vans and so on down the line.... LOL

Vince B

iTrader: (1)

The difference in the lengths is for a trans parking brake assembly. All regular 2wd length and 4wd shaft lengths are the same. Also all have the same spline count.

1FastBrick

iTrader: (17)

So 2WD and 4x4 are different lengths but your saying all 2WD has the same length and all 4x4 are the same length???

I was under the impression there was a slight variation in slip on yoke Vs. bolt on yoke length.

swift700

iTrader: (3)

Thanks for the replies, guys. I kinda figured he was out to lunch. Will go pick it up tomorrow. I'm going to rebuild this one myself. I have the shift kit already but can anyone recommend a good rebuild kit with Kolene steels?

Vince B

iTrader: (1)

Yes that is correct. The changes start when GM bolted the parking brake.

03sierraslt

iTrader: (22)

Interesting.