6L80 durability?

[madvette08]

someone needs to come out with a custom O/S for the tcm, something that eliminates all the adaptive learing and get the trans control back to the basics!

Is not that easy on a clutch to clutch transmission, GM ran into alot of problems trying to come up with the calibration to control it.

[489impala]

I have a chance to get a 6L80e and need to know if it will fit behind a Gen IV 454 big block Chevy bored and stroked to 489 with aprox 560 ft lbs and 530 hp? What will I need to fit it? Flex plate, torque converter, internal beefing, rebuild ect.? I am planning to put it in My 67 Impala.

[LSX378]

I have a chance to get a 6L80e and need to know if it will fit behind a Gen IV 454 big block Chevy bored and stroked to 489 with aprox 560 ft lbs and 530 hp? What will I need to fit it? Flex plate, torque converter, internal beefing, rebuild ect.? I am planning to put it in My 67 Impala.

At this point......without an Gen IV LS EFI engine and the right engine controller (E38/E67) it will not run...apart from in permanent 3rd gear and badly.

That may change in the near future though....

[LSX378]

Search for info on here posted by "thesubfloor". He runs an LS7 Vette that runs hi 9's lo 10's NA with a [now] built 6L80E. Well over 100 runs on the same build.

[thesubfloor]

Search for info on here posted by "thesubfloor". He runs an LS7 Vette that runs hi 9's lo 10's NA with a [now] built 6L80E. Well over 100 runs on the same build.

280 to be exact as of July 3rd before my motor let go.

[LSX378]

280 to be exact as of July 3rd before my motor let go.

Very impressive performance from the trans Chris. Sorry to hear about the motor exiting stage left. How many runs on the motor? What let go?

There you go trendsetters: 280+ runs on a 6L80E. With ~700Hp at the flywheel turning hi 9's lo 10's. And super consistent bracket times to boot.

Just like PG's, TH400's, 4L60's blah blah didnt hold any power until they were toughened up by the aftermarket and dedicated racers searching for results.

[thesubfloor]

Very impressive performance from the trans Chris. Sorry to hear about the motor exiting stage left. How many runs on the motor? What let go?

There you go trendsetters: 280+ runs on a 6L80E. With ~700Hp at the flywheel turning hi 9's lo 10's. And super consistent bracket times to boot.

Just like PG's, TH400's, 4L60's blah blah didnt hold any power until they were toughened up by the aftermarket and dedicated racers searching for results.

Thanks, but like they say "it didn't owe me anything" as I got just under 500 runs from it. I lost 3MPH by the 1/8th mile on my 4th pass that day and I was honestly hoping it was a valve spring issue but when I tore it down I found a crack in the number 5 cylinder.

[LSX378]

Thanks, but like they say "it didn't owe me anything" as I got just under 500 runs from it. I lost 3MPH by the 1/8th mile on my 4th pass that day and I was honestly hoping it was a valve spring issue but when I tore it down I found a crack in the number 5 cylinder.

700HP 500 runs. Cant complain about that. Stock LS7 liners? Crack in the thrust side vertically or some other crack?

[04blackgmc]

Stock trans here at 30k been through 30-40 bottles and ditched that and now been boosted for a month or 2.

[CalebTheCarNinja]

I found that the durability of the 6L80 is actually pretty good. Mine lasted a LONG time before having to replace it.. I just got a new one from these guys https://reman-transmission.com/trans...des/?code=6L80 and she works like a charm. Just had to take it to the shop and have it installed and now im sittin pretty