Stock or 9/11
- Thread starter ircwet
- Start date
George Blake
DONATING MEMBER
Re: Stock or 9/11
Yank for stock.
ircwet said:
Yank for stock.
Tooky
Serious about performance
Re: Stock or 9/11
It would be a lot easier to replace your chip's TCC Lockup points than to replace your converter!
But, for a stock truck I would say the best converter is a stock converter! I bet you could get one for dirt cheap too (hopefully out of a known-good truck). I went 12.26 @ 108 on my stock converter, stock turbo... And later 11.79 @ 114 MPH (video) with a PT51 turbo.
It would be a lot easier to replace your chip's TCC Lockup points than to replace your converter!
But, for a stock truck I would say the best converter is a stock converter! I bet you could get one for dirt cheap too (hopefully out of a known-good truck). I went 12.26 @ 108 on my stock converter, stock turbo... And later 11.79 @ 114 MPH (video) with a PT51 turbo.
turbodig
Active member
Re: Stock or 9/11
As long as it was an original Sy converter, I'd agree with this. Late Tys and svc campaign Sys had a converter that was restalled lower than the originals. These were dogs.
I've had a TCS 9/11 for going on 10 years. It's never missed a beat.
George's recommendation of the Yank is a good one as well. They are a bit spendy.
Tooky said:
As long as it was an original Sy converter, I'd agree with this. Late Tys and svc campaign Sys had a converter that was restalled lower than the originals. These were dogs.
I've had a TCS 9/11 for going on 10 years. It's never missed a beat.
George's recommendation of the Yank is a good one as well. They are a bit spendy.
George Blake
DONATING MEMBER
Re: Stock or 9/11
When you go to a higher stall, shift points and lockup points need to be raised appropriately to get the feel back. On 700's the shift points that are mainly considered an issue are WOT shift points. On the TCC, stock stall is 2100RPM approx. It locks up at about 35 mph maybe a little less. If you go to a higher stall, you need to raise the lockup a bit to take care of the driveline shudder.
If it was a NEW converter and it shuddered, do the lockup mod with the ecm.
If it was a used converter, you need a new converter or try lubegard and a fluid change. Do NOT under any circumstances use mobile one atf synthetic fluid. You WILL have problems.
Something else to consider, different converter manufacturers have different characteristics. Stock is pretty much set in stone. PI will be less efficient. I've had as much as a 1500 rpm drop upon lockup. Yank will be more efficient and only drop about 300 rpm. PI can take wot lockups better with it's 3 clutch setup, Yank doesn't recommend lockup at wot because their's is so efficient.
When you go to a higher stall, shift points and lockup points need to be raised appropriately to get the feel back. On 700's the shift points that are mainly considered an issue are WOT shift points. On the TCC, stock stall is 2100RPM approx. It locks up at about 35 mph maybe a little less. If you go to a higher stall, you need to raise the lockup a bit to take care of the driveline shudder.
If it was a NEW converter and it shuddered, do the lockup mod with the ecm.
If it was a used converter, you need a new converter or try lubegard and a fluid change. Do NOT under any circumstances use mobile one atf synthetic fluid. You WILL have problems.
Something else to consider, different converter manufacturers have different characteristics. Stock is pretty much set in stone. PI will be less efficient. I've had as much as a 1500 rpm drop upon lockup. Yank will be more efficient and only drop about 300 rpm. PI can take wot lockups better with it's 3 clutch setup, Yank doesn't recommend lockup at wot because their's is so efficient.
Re: Stock or 9/11
George,
what is the problem with Mobil 1 ATF? I was thinking of putting it in my Sy, to get a bitter better mileage and maybe a horsepower or two. I have used it with success over the years in all my daily drivers. Is it fine for daily drivers but not for performance applications? I thought it was the best tranny fluid on the market.
Thanks!
--Craig Stangohr
Aiken, SC.
Sy 1563
12.71@106.42@18lbs.
George,
what is the problem with Mobil 1 ATF? I was thinking of putting it in my Sy, to get a bitter better mileage and maybe a horsepower or two. I have used it with success over the years in all my daily drivers. Is it fine for daily drivers but not for performance applications? I thought it was the best tranny fluid on the market.
Thanks!
--Craig Stangohr
Aiken, SC.
Sy 1563
12.71@106.42@18lbs.
George Blake
DONATING MEMBER
Re: Stock or 9/11
It has mades seals swell and come apart as well as delaminate clutch material from the steel core. Not sure if it was a bad batch released or what. I personally put it in my Sy years ago, immediately got shudder. Changed it out. Put Valvoline ATF Dex III in it and the sudder was instantly gone. I won't use it or recommend it.
Use Redline or Royal purple lines if your gonna go synthetic. Now Mobile One makes an outstanding ENGINE oil, just not trans fluid.
It has mades seals swell and come apart as well as delaminate clutch material from the steel core. Not sure if it was a bad batch released or what. I personally put it in my Sy years ago, immediately got shudder. Changed it out. Put Valvoline ATF Dex III in it and the sudder was instantly gone. I won't use it or recommend it.
Use Redline or Royal purple lines if your gonna go synthetic. Now Mobile One makes an outstanding ENGINE oil, just not trans fluid.
ranger said:
Re: Stock or 9/11
George,
thanks for the prompt reply. I wonder if the key statement may be "years ago."
I, too, put it in my 70 Buick years ago (around 1992) in a Turbo 400, and it, too, made the seals swell, so I changed it out.
Still, you are correct that Mobil 1 is a great engine oil, but we must remember that the Mobil 1 of today is not the Mobil 1 when it was first introduced (around 1982?). Back then their initial claim was that it could go 25K miles between changes. That was nonsense.
So, no doubt Mobil has refined their ATF over the years, but to what extent, I guess we don't know. When I say I have used it in my daily drivers, I am just topping it off after a trans service--putting in 3-5 quarts, so it is blending with the dino oil. Maybe this is why I've had good luck.
The original Mobil 1 made most engines leak like crazy; they had no additives to condiiton the seals, which I've read they do indeed have now. I still wouldn't put it in a car that has any major oil leaks.
In your opinion, what is the best "conventional" ATF, or does brand even matter? I always have used a bottle of red LubeGuard with any fluid. How about the "high-mileage" ATFs, as made by Valvoline, etc?
Thanks!
Regards,
Craig Stangohr
Sy 1563
George,
thanks for the prompt reply. I wonder if the key statement may be "years ago."
I, too, put it in my 70 Buick years ago (around 1992) in a Turbo 400, and it, too, made the seals swell, so I changed it out.
Still, you are correct that Mobil 1 is a great engine oil, but we must remember that the Mobil 1 of today is not the Mobil 1 when it was first introduced (around 1982?). Back then their initial claim was that it could go 25K miles between changes. That was nonsense.
So, no doubt Mobil has refined their ATF over the years, but to what extent, I guess we don't know. When I say I have used it in my daily drivers, I am just topping it off after a trans service--putting in 3-5 quarts, so it is blending with the dino oil. Maybe this is why I've had good luck.
The original Mobil 1 made most engines leak like crazy; they had no additives to condiiton the seals, which I've read they do indeed have now. I still wouldn't put it in a car that has any major oil leaks.
In your opinion, what is the best "conventional" ATF, or does brand even matter? I always have used a bottle of red LubeGuard with any fluid. How about the "high-mileage" ATFs, as made by Valvoline, etc?
Thanks!
Regards,
Craig Stangohr
Sy 1563
George Blake
DONATING MEMBER
Re: Stock or 9/11
If you don't trust me, put it in and see what it does. It's not worth taking the trans out to most of us once we've been burnt. That was 7 years ago and affected MANY buiders. I use Valvoline ATF. Just my preference.
If you don't trust me, put it in and see what it does. It's not worth taking the trans out to most of us once we've been burnt. That was 7 years ago and affected MANY buiders. I use Valvoline ATF. Just my preference.
ranger said:
George Blake
DONATING MEMBER
Re: Stock or 9/11
Change it and see. You'll need someone to recal the stock eprom.ircwet said:
Re: Stock or 9/11
George,
I wasn't saying I didn't believe you about Mobil 1 ATF swelling the seals. To the contrary, I, too, was "burned" back in 1991 when I put it in my freshly rebuilt Turbo 400 switch-pitch tranny and it leaked out almost everywhere.
Rather, I was hoping that Mobil had indeed changed and refined the formula over the years, as they for sure have done with their motor oil--which also used to leak out of a many/most motors.
I have had good luck with Mobil 1 tranny fluid in my own daily drivers during the past coupla years but, again, I put 3-4 quarts in when I service the trans, and it still has as much or more of conventional oil, so that may be why I've seen no ill affects. I haven't tried filling a fresh trans with it recently--too scared!
I guess we need somebody brave enough (or dumb enough) to give the current generation of Mobil 1 ATF another chance, assuming, of course, that it has indeed changed over the past few years.
Best,
Ranger
George,
I wasn't saying I didn't believe you about Mobil 1 ATF swelling the seals. To the contrary, I, too, was "burned" back in 1991 when I put it in my freshly rebuilt Turbo 400 switch-pitch tranny and it leaked out almost everywhere.
Rather, I was hoping that Mobil had indeed changed and refined the formula over the years, as they for sure have done with their motor oil--which also used to leak out of a many/most motors.
I have had good luck with Mobil 1 tranny fluid in my own daily drivers during the past coupla years but, again, I put 3-4 quarts in when I service the trans, and it still has as much or more of conventional oil, so that may be why I've seen no ill affects. I haven't tried filling a fresh trans with it recently--too scared!
I guess we need somebody brave enough (or dumb enough) to give the current generation of Mobil 1 ATF another chance, assuming, of course, that it has indeed changed over the past few years.
Best,
Ranger