TCC 2nd gear lockup
09-11-2011, 12:52 PM
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TCC 2nd gear lockup Talking about low TPS acceleration. Is this a bad idea? Everybody says lockup will put wear on the clutch, but you'd think wot locking would be much worse, but they do that. So....
09-11-2011, 02:33 PM
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So ? Mine is set to lockup @ 5,000 rpm in second gear. It's been that way for 6 years and I have many many 1/4 runs, hole shots etc. I would like to try it unlocked for a comparison though.
09-11-2011, 06:00 PM
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I don't think that its a good idea because when engaging the clutch in 2nd even under light throttle acc. the trans will shift into 3rd not too much mph later, and its best to disengage the lock-up when shifting into different gears. the less times that you lock the clutch up the longer it will last.
09-11-2011, 08:15 PM
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I don't think that its a good idea because when engaging the clutch in 2nd even under light throttle acc. the trans will shift into 3rd not too much mph later, and its best to disengage the lock-up when shifting into different gears. the less times that you lock the clutch up the longer it will last.
It won't lock up at WOT until 3rd. The stall can do it's job.
09-12-2011, 06:56 AM
#7
LSWHO, I think the answer depends on what kind of TC you're running.
I've been running higher stall converters in my pickup for about 250,000 miles now - 98 L31 with 4L60E - and either having the PCM lock the TCC in 2nd at light throttle as you describe, or locking it with a manual switch. About 190,000 miles on a Vigilante 3000 doing this and the TCC lockup never faded a bit. Now with a Yank 3600 in it for about 60,000, plus many WOT lockups on the Yank when it was in my Impala, and that clutch also works good as new. I was actually more concerned with 3-4 clutchpack wear in the tranny, but the original (with Transgo) tranny in that pickup gave me 280,000 miles of hard use, towing, and nitrous runs before it began exhibiting the WOT2-3 shift rpm flare, which a new 3-4 clutchpack promptly cured.
But, like I said above, I think it depends on the converter brand. I wouldn't try it with a 9.5" Street Edge.
I've been running higher stall converters in my pickup for about 250,000 miles now - 98 L31 with 4L60E - and either having the PCM lock the TCC in 2nd at light throttle as you describe, or locking it with a manual switch. About 190,000 miles on a Vigilante 3000 doing this and the TCC lockup never faded a bit. Now with a Yank 3600 in it for about 60,000, plus many WOT lockups on the Yank when it was in my Impala, and that clutch also works good as new. I was actually more concerned with 3-4 clutchpack wear in the tranny, but the original (with Transgo) tranny in that pickup gave me 280,000 miles of hard use, towing, and nitrous runs before it began exhibiting the WOT2-3 shift rpm flare, which a new 3-4 clutchpack promptly cured.
But, like I said above, I think it depends on the converter brand. I wouldn't try it with a 9.5" Street Edge.
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09-12-2011, 09:03 AM
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You can lock up a triple disk when ever you want to. A single on the other hand will wear faster. Chris at circle d can help you decide when you should lock up and when you should not. Shoot him a PM and he will be glad to help you in you choice.
09-12-2011, 10:09 AM
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LSWHO, I think the answer depends on what kind of TC you're running.
I've been running higher stall converters in my pickup for about 250,000 miles now - 98 L31 with 4L60E - and either having the PCM lock the TCC in 2nd at light throttle as you describe, or locking it with a manual switch. About 190,000 miles on a Vigilante 3000 doing this and the TCC lockup never faded a bit. Now with a Yank 3600 in it for about 60,000, plus many WOT lockups on the Yank when it was in my Impala, and that clutch also works good as new. I was actually more concerned with 3-4 clutchpack wear in the tranny, but the original (with Transgo) tranny in that pickup gave me 280,000 miles of hard use, towing, and nitrous runs before it began exhibiting the WOT2-3 shift rpm flare, which a new 3-4 clutchpack promptly cured.
But, like I said above, I think it depends on the converter brand. I wouldn't try it with a 9.5" Street Edge.
I've been running higher stall converters in my pickup for about 250,000 miles now - 98 L31 with 4L60E - and either having the PCM lock the TCC in 2nd at light throttle as you describe, or locking it with a manual switch. About 190,000 miles on a Vigilante 3000 doing this and the TCC lockup never faded a bit. Now with a Yank 3600 in it for about 60,000, plus many WOT lockups on the Yank when it was in my Impala, and that clutch also works good as new. I was actually more concerned with 3-4 clutchpack wear in the tranny, but the original (with Transgo) tranny in that pickup gave me 280,000 miles of hard use, towing, and nitrous runs before it began exhibiting the WOT2-3 shift rpm flare, which a new 3-4 clutchpack promptly cured.
But, like I said above, I think it depends on the converter brand. I wouldn't try it with a 9.5" Street Edge.
Did you tune it that way to lock up in 2nd?
Mine won't luck up until 3rd. And it also locks up under WOT which I originally thought wasn't supposed to happen, but everyone says that's normal. It locks up at about 5600-5700 RPM in 3rd under WOT.
I would also like to see the difference (at the track) between a lock up vs non lock converter. Someone suggested installing a switch to be able to toggle back and forth.
Mine won't luck up until 3rd. And it also locks up under WOT which I originally thought wasn't supposed to happen, but everyone says that's normal. It locks up at about 5600-5700 RPM in 3rd under WOT.
I would also like to see the difference (at the track) between a lock up vs non lock converter. Someone suggested installing a switch to be able to toggle back and forth.
09-12-2011, 04:25 PM
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if ya have a good converter there isnt any benefit to locking it at all . i know with mine i saw a .01 diff in it under exact situations at the track . ask any good converter builder and he will tell ya the same in fact i dont belive any good converters come with a multi disk anymore unless its custom built . i called all of them lookin for a tripple and asked about lockin the conv and alll said the same , they dont offer em as there so efficient now ya dont see much diff
09-12-2011, 04:27 PM
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performabuilt uses edge converters i belive . i have one in mine and used to lock it all the time on no2 -dyno etc and still holding strong
09-12-2011, 04:43 PM
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the one i didnt call does , so i missed one my bad lol . who cares either way . lockin a conv isnt gonna gain ya a full second or make ya trap 160 m.p.h lol . most newer good converters are efficient enough that there is no need to lock em . unless its a full out track car and every tenth matters
09-12-2011, 06:25 PM
#14
if ya have a good converter there isnt any benefit to locking it at all . i know with mine i saw a .01 diff in it under exact situations at the track . ask any good converter builder and he will tell ya the same in fact i dont belive any good converters come with a multi disk anymore unless its custom built . i called all of them lookin for a tripple and asked about lockin the conv and alll said the same , they dont offer em as there so efficient now ya dont see much diff
......... "T a l k i n g a b o u t l o w T P S a c c e l e r a t i o n"Yes, clutch materials have improved to where there's less need for triple disck lockup converters. They don't come without compromises either. The few setups I've seen running them were not very impressive at the track.
