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Old 03-18-2004, 11:47 AM   #26
Destructo
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I run my stock converter with my 700r4 locked in 3rd gear ALL the time, since I can't use overdrive I keep the transmission in 3rd and the converter locked at all times (manual switch), I bought the lockup wiring from Bowtie overdrives for mine. Using a crappy advance auto torque converter though.
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Old 03-18-2004, 07:28 PM   #27
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Whenever I'm in third, it is always a short time so the tranny does alot of locking/unlocking which is not great for it. I guess my driving style does it, but I don't need it cycling like that.

Not to mention that when I'm pulling or in a mountainous area, I don't want it locking in 3rd. Right now when I have the shifter in drive it still locks. Locking is not good for towing, neither is the up and down mountain thing. I just want more control over what it does - that's all.
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1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles
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Old 03-18-2004, 10:56 PM   #28
mike reeh
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Quote:
Originally posted by apstguy
Whenever I'm in third, it is always a short time so the tranny does alot of locking/unlocking which is not great for it. I guess my driving style does it, but I don't need it cycling like that.

Not to mention that when I'm pulling or in a mountainous area, I don't want it locking in 3rd. Right now when I have the shifter in drive it still locks. Locking is not good for towing, neither is the up and down mountain thing. I just want more control over what it does - that's all.
I think you've been misled. if you're towing you definately want the converter locked up. As for your cycling problem, that is probably easily cured with some sensor adjustment/replacement. it shouldnt be cycling.

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Old 03-19-2004, 12:15 AM   #29
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What makes it cycle is a 305 and 3.08 gears

BTW, putting a very heavy load on the converter WHILE it is lock is a no-no.
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1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles
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Old 03-19-2004, 12:53 AM   #30
mike reeh
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I respectfully disagree..

if you're referring to the fact that it unlocks under WOT from the factory, its a performance/driveability issue..

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Old 03-19-2004, 03:17 AM   #31
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ok. That works for me. I guess it is just preferance.
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1985 C10 305 w/ Bowtie OD TH700R4 3.42 LSD 202,000 miles
2006 Ford Focus ZX3 5-speed Stick
2016 Chevy Spark EV
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Old 03-19-2004, 03:53 AM   #32
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under WOT, the torque converter should lock-up around 80mph, which is how you want it. You gonna tow above 80mph with the pedal buried?
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Old 03-19-2004, 10:41 PM   #33
mike reeh
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Quote:
Originally posted by TIMSPEED
under WOT, the torque converter should lock-up around 80mph, which is how you want it. You gonna tow above 80mph with the pedal buried?
How do you figure you can narrow down to the exact MPH when my converter should lock? How would you know when it should lock and since we're on the topic, why does it need to be unlocked at a speed lower, and locked at the speed higher? I mean really now are you just pulling #'s out of thin air?

Id also like someone to explain why the T.C. needs to be unlocked during "heavy loads" or towing? None of the stuff Im reading on this thread lately really makes any sense to me so I would like to be enlightened. Just in the last few months I have gotten a 700r4 for my truck. I think Ive learned a fair amount about them & the theory of their workings. If Im wrong Id like to be schooled

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Old 03-20-2004, 07:26 AM   #34
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Quote:
Originally posted by mike reeh


How do you figure you can narrow down to the exact MPH when my converter should lock? How would you know when it should lock and since we're on the topic, why does it need to be unlocked at a speed lower, and locked at the speed higher? I mean really now are you just pulling #'s out of thin air?

Id also like someone to explain why the T.C. needs to be unlocked during "heavy loads" or towing? None of the stuff Im reading on this thread lately really makes any sense to me so I would like to be enlightened. Just in the last few months I have gotten a 700r4 for my truck. I think Ive learned a fair amount about them & the theory of their workings. If Im wrong Id like to be schooled

mike
Mike, I'm saying in MY 700R4, with 3.07 gears and 26" tall tires. In Theory it should be CLOSE to the same for Tyler's truck. For my, it locks-up at 41mph (non wot) and 80mph (wot)
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