The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Racing and high performance (trucks haulin more than hay)

Web 67-72chevytrucks.com


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 06-07-2016, 11:55 PM   #15
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Cruised to an 11.51@116 with turbo 5.3 (video)

Quote:
Originally Posted by Super73 View Post
Hmmm, maybe I got lucky with the 80e but I always had it WOT lock in 2nd +/- 6,500ish rpm shifting to 3rd at 7,100 (shift lock diaabled) and locking it up again in 3rd at 6,500. Never missed a beat in 5 years with a couple different verters.

These settings were used from its maiden 12.3x @ 3,900lbs to its 10.7x pass at 3,525lbs. All on the same stock 80e.

Min lock up % was set to 99% and max was set to 100%.

I have done other large vetter 80e's in similar fashion with out issue. Maybe I am just getting lucky?
I wish I could actually tell you, thats part of why it bothers me. The tuning part I'm learning from the best, but the "knowing wtf the auto trans is actually doing" part is where im behind the curve. None of the cars I'm referencing have come off of a tune we did, but (myself included) I've seen probably 5 now that have had aftermarket lockup converters get wrecked by 2 tuners at 2 facilities.

Once the owner told us the tuner had "set everything to lock in 3rd", which could mean anything. Another car had a log showing tcc lock being commanded at almost every TPS, but nothing weird in the tune. That lead us to believe that the tuner had set the TCC apply tables all really low and tried to force lockup through the whole pull, then just set it back....then we had a self-tuned car come in, saying a dyno operator did almost exactly the same thing to his tune because the car "wasn't putting down the right numbers".

Where are you setting your min and max lockup %? I only see the speed TCC release settings (which are all TPS and Speed based) and the Offset TCC table in the other tab.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
 

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:56 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com