TCC lockup toggle switch: pro’s and con’s & proper operation
Thread Starter
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Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
TCC lockup toggle switch: pro’s and con’s & proper operation
Did search, found the article, but to many opinions spread out all over the place.
https://www.thirdgen.org/torqueswitch
Can we narrow it down.
What are the pro's and con's of having it on a switch?
What is the proper operation or use of said swtich for the novis?
[since it is the cheap way out when you lose the computer]
Street use
When to turn it on, what speed, rpm....
When not to turn it on.
Racing
When to turn it on, what speed, rpm....
When not to turn it on.
https://www.thirdgen.org/torqueswitch
Can we narrow it down.
What are the pro's and con's of having it on a switch?
What is the proper operation or use of said swtich for the novis?
[since it is the cheap way out when you lose the computer]
Street use
When to turn it on, what speed, rpm....
When not to turn it on.
Racing
When to turn it on, what speed, rpm....
When not to turn it on.
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Joined: Apr 2007
Posts: 208
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From: Sioux Falls, SD
Car: 85 Firebird
Engine: SBC 383/88BW
Transmission: Built 700R4
Axle/Gears: Moser 9in/3.55
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
I don't run it locked up racing, afraid the lockup won't take the power, I don't even run into 4th gear during racing (slow fluid movement, and hot = bad)
I run it on the street locked up only when i'm in 4th gear, BUT i don't let it hit 4th unless I am at least running within my powerband so it doesn't bog
I run it on the street locked up only when i'm in 4th gear, BUT i don't let it hit 4th unless I am at least running within my powerband so it doesn't bog
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
The TCC clutch is a weenie little thing that was intended to be unlocked under just about any acceleration at all. I wouldn't lock it up at WOT.
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
I run mine solely from a toggle - I had a vacuum switch installed, but wasn't happy with the timing of the lock and unlock, so I disabled it and I run solely on a toggle. I lock it when I get above 50mph and then only when I'm going to be on a decent cruise (aka highway with no upcoming red lights). I unlock whenever I start slowing for the upcoming stop - like right when I fall below 40 mph. Hope that helps.
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
I figured you left it on for racing cause it was suposed to shave almost .2 seconds off the quarter?
Last edited by RU1NER; Jan 6, 2010 at 07:03 AM.
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
what about the B&M kit that is adjustable?
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
Thread Starter
Supreme Member
Joined: Oct 2001
Posts: 8,113
Likes: 6
From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
Hey, well who decided to hide that in the carb section???
I only searched the trans section.
I only searched the trans section.
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
Does anyone know of a place other then GM Parts direct to get the vacuum switch? I keep putting in the number into their search and it keeps coming back as unavailable.
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: TCC lockup toggle switch: pro’s and con’s & proper operation
Try one of the alternate vacuum switches listed.
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