TCC @ WOT Comparison.....
Thread Starter
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
TCC @ WOT Comparison.....
Just curious if anyone here has done a locked and unlocked converter comparison in the 1/4. I'm off to do one of my own here shortly at Rockingham. I'll post the results later today.
Race Director
Joined: Jun 2004
Posts: 13,953
Likes: 706
From: WI
I've wondered how the lock up functions when turned off, will it automatically unlock to shift requiring you to lock it back up after every shift?
Thread Starter
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
Andrew, on my '96 all the converter settings are done in the PCM/TCC settings. I can't address what happens with the older transmissions. When it's unlocked at WOT you'd never know it under normal driving conditions unless you floor it.
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
I lock my converter after the 1-2 shift on all my 1/4 mile runs. It's good for about .15-.20 in the quarter and 3 mph. I have a manual switch on the console and a 3 disk Precision Industries converter. It's tough on the 4l60e but I have it freshened up every year. Willie
Race Director
Joined: Jun 2004
Posts: 13,953
Likes: 706
From: WI
Race Director
Joined: Apr 2003
Posts: 17,699
Likes: 1,667
From: moraga ca
I record all my runs with a LM-1. The converter remains locked through the 2-3 shift. That is why it's tough on the trannys. Some racers will lock the tranny up in 3rd gear to avoid clutch wear.
Thread Starter
Safety Car
Joined: Dec 2007
Posts: 3,616
Likes: 5
From: Sandhills of North Carolina
Did my little comparison and all the best times I had were with it unlocked at WOT. That being said none of it is worth bragging about. 12.4 @109 was it's best. DA was 581. I guess I'm going to have to decide if I want to put 400.00 more in this thing or not for a dyno tune. My tuner has done his best but you can only do so much by mail order.
Here's a in-car if you guys care to watch. This was my last run of the day.
http://youtu.be/EsFc6FYZMtQ
Here's a in-car if you guys care to watch. This was my last run of the day.
http://youtu.be/EsFc6FYZMtQ
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J/K The car sounds good!! 