4L60/700R4 TCC Lockup in 3rd
Thread Starter
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
4L60/700R4 TCC Lockup in 3rd I've heard many, while chassis dynoing their cars, will make a pull in 3rd with the converter locked. I understand the thinking. I also have the capability to do so.
My question, and it pertains to the holding capacity of the clutch itself, is aren't they putting themselves at risk of smoking the clutch?
I've an Edge converter with a single disc and my understanding is that it's really designed to maintain a cruise RPM in O.D. and not much more. Of course the triple disc has greater holding capacity but the racers I'm talking about don't have, for the most part, anything other than a single disc. Even if it is a "woven carbon fibre" by Edge, how's that going to hold up to WOT while on the rollers? FTR: In my case this is about 450-500 lb-ft TQ.
Edge suggested no.
Anyone here with relatable experience?
My question, and it pertains to the holding capacity of the clutch itself, is aren't they putting themselves at risk of smoking the clutch?
I've an Edge converter with a single disc and my understanding is that it's really designed to maintain a cruise RPM in O.D. and not much more. Of course the triple disc has greater holding capacity but the racers I'm talking about don't have, for the most part, anything other than a single disc. Even if it is a "woven carbon fibre" by Edge, how's that going to hold up to WOT while on the rollers? FTR: In my case this is about 450-500 lb-ft TQ.
Edge suggested no.
Anyone here with relatable experience?
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Joined: Mar 2023
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From: BERWICK PA
I do not advise locking the converter at WOT unless a triple disc , Yes high risk of smoking the lockup clutch .
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Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
LS1Tech Sponsor
Joined: Mar 2023
Posts: 1,821
Likes: 1,159
From: BERWICK PA
__________________
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Frank formerly of Performabuilt, Now just me, What can I build for you today? Call or message me. Click sig pic for my facebook
Thread Starter
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
No thanks. If I never have to drop a transmission again, it'll be too soon.
Thread Starter
Staging Lane
Joined: Dec 2012
Posts: 94
Likes: 11
I'm thinking WOT in 3rd with provide enough data from the dyno to be able to calculate converter slippage. Last time I went, there was no RPM trace on the graph! Seriously? So I had to scale it myself more or less based on the 5250 RPM crossover point, MPH and tire diameter but that in itself built inaccuracies into the results. Give me wheel speed and real time engine RPM and the math is simple.
But I'm set to give it another go and get some baseline data for the season ahead.
Thanks Frank. No lockup for me in 3rd!
But I'm set to give it another go and get some baseline data for the season ahead.
Thanks Frank. No lockup for me in 3rd!
