ss performance

iTrader: (17)

I'm starting to see 6L80E's for sale.

I was wondering what issues are involved with stuffing one in a 4th gen F-body.

Wondering about computer issues, clearances, cross members, etc.

Thanks

Blackpanther99

iTrader: (8)

I know a guy from another forum (62Naldie) Which most likely he is on the Performance Trucks forum as well and he was pushing his stock 6l80e up to 700+RWHP on his boosted crew cab Denali. He has been having that transmission for some long time now and hasnt gave him a single issue. It is claimed that a major issue that the 6L80s is having is that a drum would crack and it would loose pressure.

ss performance

iTrader: (17)

Anyone?

mrvedit

Here are several related threads in which I participated:

https://ls1tech.com/forums/automatic...60e-6l80e.html
(Poorhousenext documents the gear ratios and the % difference. Well done!)

https://ls1tech.com/forums/automatic...-question.html
https://ls1tech.com/forums/automatic...ler-6l80e.html

The real question is why?
If I were offered one for free, I would pass. (Ok, take it and then sell it.)
For one thing, it is even larger and heavier than a 4L80E (which barely fits).
The computer problems sound complex; it has one computer built into the case, but that expects to communicate to a BCM (body control module) over the modern CAN (Car Area Network) bus, which no 4th gen has.

While it has been documented (see above) that the huge 1-2 shift ratio is actually less than a 4L60E, the 4.06 1st gear only makes sense if you have a 2.73 rear, and 6th gear .667 ratio would put you at such low revs that only a stock cam would be happy. All IMHO of course.

A 4L80E swap would be much simpler and I have never read of anyone regretting that choice.

ss performance

iTrader: (17)

Now that's the kind of input that's helpful.

Thanks.

warriorpluto

iTrader: (2)

I am now looking into doing this on my 99 trans am. Has anyone completed a swap yet?