Transmissions and Drivetrain Need help with your trans? Problems with your axle?

lock up conv? (w/ manual switch)

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Old Mar 24, 2006 | 07:38 PM
  #1  
blown3rdgen's Avatar
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lock up conv? (w/ manual switch)

I have a built 700r4 w/2800 vigilante conv. The lock-up feature is wired through a toggle switch.
My question: What would produce the best track times?

-always locked
-never locked
-or split (1-2 unlocked, 3rd locked)


Thanks
Matt
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Old Mar 24, 2006 | 08:02 PM
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Fast355's Avatar
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
NEVER locked will keep you from FRYING your TCC clutch, trashing your valve body and converter, therefore requiring a transmission rebuild. Unless you have the $$$$ converter DON'T lock the TCC at over about 1/2 throttle (USE THE GM VACUUM SWITCH (connected to ported vacuum) in your setup)
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Old Mar 26, 2006 | 03:05 PM
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blown3rdgen's Avatar
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I'm not overly concerned with longevity. I am more concerned about performance #'s right now. This is only a weekend toy and will be changing trannies soon enough anyways (to th350/400)

Thanks
Matt
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