LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Stock Torque Converter stall?????

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Old Sep 10, 2003 | 10:35 AM
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S.J.S.'s Avatar
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Stock Torque Converter stall?????

Hey guys anyone happen to know the stall on a stock torque converter?
Old Sep 10, 2003 | 10:43 AM
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~1600-1800 rpm, if I remember correctly.
Old Sep 10, 2003 | 10:46 AM
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Lets say you had my specs, and had to do stop go traffic everyday, what size covt. would you go with?
Old Sep 10, 2003 | 10:47 AM
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Which specs now? The soon to be ones?
Old Sep 10, 2003 | 10:51 AM
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Yeah...got everthing, almost done.
Old Sep 10, 2003 | 10:55 AM
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Well you'd really benefit from a higher stall, especially since you don't have to worry about the 3K OBDI issue.
I just got my first A4 (drove M6s before) so I don't have a lot of driving experience with higher stalls, but I suppose a 2600 would be good, although I'd probably go with a 2800-3000 if it was my car.

FWIW, most hotcams I've tuned before were in the 2400-2600 range.
Old Sep 10, 2003 | 10:59 AM
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The reason I ask is that the trans shop that is custom making my converter took all the specs of what I'm running and said to go with a 2500 stall for optimum performance. I thought it was kinda low.
Old Sep 10, 2003 | 11:26 AM
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Originally posted by madwolf
Well you'd really benefit from a higher stall, especially since you don't have to worry about the 3K OBDI issue.
I just got my first A4 (drove M6s before) so I don't have a lot of driving experience with higher stalls, but I suppose a 2600 would be good, although I'd probably go with a 2800-3000 if it was my car.

FWIW, most hotcams I've tuned before were in the 2400-2600 range.
Hay..Wolf, enlighten me. I have the A4 on my OBDI 94 Z28 LT1. What is the issue with 3K OBDI. I am planning to get a higher stall speed converter to replace my stock converter. My Z seems to Jump as soon as I shift into D. I think I also need a vacuum reserve since my breaks does not seem to hold well at idle due to low vacuum.
Old Sep 10, 2003 | 11:52 AM
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I'm not sure what exactly has been done to your tune, but improved closed throttle timing usually helps the brake issue.
Also, I've seen the D "jumping" on cars with the line pressure set high for 0% throttle. I always leave that at 0.

As for the high stall issue, it's a shifting issue (the car doesn't want to shift into next gear, hits the rev limiter, then soft lands into 3rd). This usually happens with sticky tires/slicks.
Old Sep 10, 2003 | 06:08 PM
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Originally posted by madwolf
I'm not sure what exactly has been done to your tune, but improved closed throttle timing usually helps the brake issue.
Also, I've seen the D "jumping" on cars with the line pressure set high for 0% throttle. I always leave that at 0.

As for the high stall issue, it's a shifting issue (the car doesn't want to shift into next gear, hits the rev limiter, then soft lands into 3rd). This usually happens with sticky tires/slicks.
Does this happen even with a shift kit installed to the A4. I have a transgo shift kit.
Old Sep 10, 2003 | 06:09 PM
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Yes, unfortunately, it does.
Old Sep 10, 2003 | 06:11 PM
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Originally posted by S.J.S.
Lets say you had my specs, and had to do stop go traffic everyday, what size covt. would you go with?
I have a precision 3600 with the CC306 cam and its fine for stop and go traffic. I drive it everyday back and forth to class in college, but I am use to it so its not a big deal.
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