First pass with YSI = broke 6l80 case
02-16-2017, 10:49 PM
#21
Le Mans Master
Originally Posted by DEE_Vette
I had same issue... Built 6L80... First pass 1.56 60ft, 10.24, 135mph... 2nd pass broke 6l80... Output shaft shear off inside trans and it took out the Z06 Rear end... Car didnt wheel hop... Have your trans tune checked...Broke lots of other stuff though. LOL.
02-16-2017, 11:09 PM
#22
Racer
Who you telling its crazy... 
Expensive "Built" Trans with their tune in it... put in virgin stock trans... 
Had Pat G. Tune it... 1.45 60ft, 9.80 139mph no issue...
02-17-2017, 12:21 PM
#30
Racer
When you open it up, you will see it sheared off of the rear planetary...
Did you have any wheel hop...???
Did you have any wheel hop...???
Last edited by DEE_Vette; 02-17-2017 at 12:23 PM.
02-17-2017, 12:30 PM
#32
Instructor
Thread Starter
Nah no wheel hop ever. Diff had 1300 miles on it and I put 2200 miles extra on it and 12-15 passes (mostly 1/8th). Was actually pretty tame on the street for the most part as I don't tend to street race (haven't ever with the Vette). Trans only as 23xxx miles on it.
02-17-2017, 12:39 PM
#34
Racer
I know it Sucks... Dont feel bad... My Trans was "Built" and had about 600 miles on it and was on the second pass...
02-17-2017, 01:06 PM
#36
Le Mans Master
Can never feel bad.. its part of the game. But it would be nice to figure out how to possibly avoid this... or at least lesson the chances.
Ive broken axles, and diff shafts, but never a hard part in the trans.. Maybe our crappy track that doesn't hold well was saving me. I dunno.
Ive broken axles, and diff shafts, but never a hard part in the trans.. Maybe our crappy track that doesn't hold well was saving me. I dunno.
02-17-2017, 02:10 PM
#37
Instructor
Thread Starter
Called RPM about a 4L60 conversion and I can't ball that hard. Talked to Century and they're gonna send me an email with a list of upgraded parts. That's most likely what will happen. Mike from Century sad he's only seen 3 main shaft failures so they haven't had a reason to develop an upgrade for it.
02-17-2017, 02:13 PM
#38
Le Mans Master
Called RPM about a 4L60 conversion and I can't ball that hard. Talked to Century and they're gonna send me an email with a list of upgraded parts. That's most likely what will happen. Mike from Century sad he's only seen 3 main shaft failures so they haven't had a reason to develop an upgrade for it.
02-17-2017, 02:45 PM
#39
Racer
Dont know what type power you are putting to the wheels.... I don't think its the parts inside them... TUNING, Tuning, tuning... Find somebody that really knows... Tuners and Builders are killing the trans... Even the "Built" ones... Contact Pat G.
Contact Pat G.
Last edited by DEE_Vette; 02-17-2017 at 02:49 PM.
02-17-2017, 03:37 PM
#40
Instructor
Thread Starter
Not sure on the blower but made mid 7s on turbo.
I've spent countless hours studying 6l80e tuning and trying stuff on my car. I feel I have a pretty good handle on it. Not saying there isn't room for improvement but I feel confident in my 6l80 tuning skills at this time. I do agree Pat G is great at what he does though.
I've spent countless hours studying 6l80e tuning and trying stuff on my car. I feel I have a pretty good handle on it. Not saying there isn't room for improvement but I feel confident in my 6l80 tuning skills at this time. I do agree Pat G is great at what he does though.