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Hello guys/gals. Have a 1998 Cpe w/ Vortec, headers, "blower cam" (nothing big), Dewitts, etc., etc.. Was wondering what the highest acceptable running temperatures for the tranny fluid is. Given the coolant can run at 220-degrees all day, shouldn't the tranny fluid? Thanks!
Hello guys/gals. Have a 1998 Cpe w/ Vortec, headers, "blower cam" (nothing big), Dewitts, etc., etc.. Was wondering what the highest acceptable running temperatures for the tranny fluid is. Given the coolant can run at 220-degrees all day, shouldn't the tranny fluid? Thanks!
highest accepatable and happy ten range is very different....im sure 200-220 is acceptable for a real short term but i prefer 160-180 range for daily driving...everything will last longer
I'm running a 3600 converter with the largest plate cooler available. Even though the cooler is shrouded by the Intercooler I rarely see temps over 175. I think I'm going to install a fan or second cooler to keep temps around 150. I'm also running a 160* thermostat with the first fan coming on 170 and the second coming on at 180. I can usually keep coolant under 190, so that helps too.
Last edited by reactor2; Jul 22, 2014 at 12:27 AM.
Many thanks. Reinstates what was kinda already understood. Just needed a refresher. Appreciate your feedback(s). Had a buddy running +200-temps on a recent cruise. That "Art Carr" (recently) rebuilt 4L60E blew UP. Now, we will be experimenting with two different offerings from RPM. Trust me when I tell you, we WILL LET this community know. Over, and over and over again. The cherry ontop? Who did the work. Lotta eyes/ears on this "break-in" period. Guaranteed.
Many thanks. Reinstates what was kinda already understood. Just needed a refresher. Appreciate your feedback(s). Had a buddy running +200-temps on a recent cruise. That "Art Carr" (recently) rebuilt 4L60E blew UP. Now, we will be experimenting with two different offerings from RPM. Trust me when I tell you, we WILL LET this community know. Over, and over and over again. The cherry ontop? Who did the work. Lotta eyes/ears on this "break-in" period. Guaranteed.
+200 as in 250+? Low 200s shouldn't cause a tranny to fail. I've been over 200 many times and I'm pushing 550+ whp through a bone stock transmission with 60k miles. Who rebuilt the transmission?
thanks for the info guys ! yeah it was running 220 , never got above that but obviously something major went wrong. HAd the work done by a total scum bag shop who I should of never taken it to .. WILSOM IMPORTS AND DOMESTICS .i wont get into it but staw away from james ( jim ) mullin .
going with RPM level 6 which should handle my hp !
thanks for the info guys ! yeah it was running 220 , never got above that but obviously something major went wrong. HAd the work done by a total scum bag shop who I should of never taken it to .. WILSOM IMPORTS AND DOMESTICS .i wont get into it but staw away from james ( jim ) mullin .
going with RPM level 6 which should handle my hp !
Yikes! Went LVII from RPM. (So I've been invoiced for) If that L6 will handle your power, the "L7" I paid for should far outlast your L6. It will be interesting to compare broken parts. They know who they are. So do MANY others now. I'll save that shops reputation for now. Be advised, they are in Tomball, TX. There are three or more to chose from. Not the place in Spring you speak of. For now, word of mouth has traveled. I suspect people are curious of the results.
My "Level IV" let go back on June 8th or so, after having been serviced for the upcoming NCM cruise. That nite, it failed. Sooo, ordered a "Level VII", had the torque tube rebuilt, etc... in an effort to make the NCM deal. A MONTH later, the car was ready. Just a month. Later.
Yesterday I saw 175* when idling after a 1 hr drive, then sitting in 15 mins of bumper to bumper traffic...Temp was pretty stable there... I doubt it would go over 180*..
This with a custom FTI 9.5" converter (that is pretty tight around town) and the B&M 70297 trans cooler with the fan on it and running. most of the time when driving down the hwy its under 170*... This on a 95* day.
Yesterday I saw 175* when idling after a 1 hr drive, then sitting in 15 mins of bumper to bumper traffic...Temp was pretty stable there... I doubt it would go over 180*..
This with a custom FTI 9.5" converter (that is pretty tight around town) and the B&M 70297 trans cooler with the fan on it and running. most of the time when driving down the hwy its under 170*... This on a 95* day.
Thx for the info. From Houston to Austin last weekend, it ran 158/160-degrees. In the hills, around the lake, saw 180 max. Back to Houston pretty much the same @ 80-100mph cruise... 'bout 160-degrees. And, yes, it was warm out! I think if you have a cooler, and, your trans isn't under rated, you should be gtg.
Yesterday I saw 175* when idling after a 1 hr drive, then sitting in 15 mins of bumper to bumper traffic...Temp was pretty stable there... I doubt it would go over 180*..
This with a custom FTI 9.5" converter (that is pretty tight around town) and the B&M 70297 trans cooler with the fan on it and running. most of the time when driving down the hwy its under 170*... This on a 95* day.
I drove mine today and the temp never got over 170 and I was in bumper to bumper with the outside temp hovering 95*. I wished I could say the same about the water temp. I had to turn off the ac since it reached 230. But once I did it stayed around 210. I'm done driving it in the summer.
I drove mine today and the temp never got over 170 and I was in bumper to bumper with the outside temp hovering 95*. I wished I could say the same about the water temp. I had to turn off the ac since it reached 230. But once I did it stayed around 210. I'm done driving it in the summer.
Been there done that! The latest tune turns the Dewitts fans on earlier (cooler) and the external B&M cooler helped to keep things cool. Fans! Gotta have airflow! Do you have the Dewitts rad/fans? I ended up getting the fans after another teardown, because the factory fans fit err, don't fit well, and they're not 1998 issue. I forget what temp the trans cooler fan comes on. It stays fairly cool now. Thanks for your input.
I drove mine today and the temp never got over 170 and I was in bumper to bumper with the outside temp hovering 95*. I wished I could say the same about the water temp. I had to turn off the ac since it reached 230. But once I did it stayed around 210. I'm done driving it in the summer.
HAHAHA....Welcome to my world... After a 1 hr drive around town, then sitting in about 15 mins of bumper to bumper traffic, then a 10 min stop light, I was at 235* when I finally turned the AC off... It will hold 208-214* when moving with the AC on.... Idling for more then 5 mins when its really heat soaked send the temps climbing.... Nothing really left I can do besides the new brushless spal fans...
I'm still gonna drive it..... At 230* I'll turn the AC off...IF I get caught in traffic.. Sux but that is the reality..
I don't understand mine my engine runs cool 190 and that's with an iron block
My tranny gets up to 200 and I have the b&m with the fan running all the time
mounted in front of the aftermarket radiator.
I don't understand mine my engine runs cool 190 and that's with an iron block
My tranny gets up to 200 and I have the b&m with the fan running all the time
mounted in front of the aftermarket radiator.
Are you sure the B&M fan is working? Are your A4 lines still routed through your radiator? RPM says they normally plumb/place the cooler after the radiator. Mine just goes to the cooler, no longer through the radiator. Cooler is mounted to the left side (front left brake duct is no longer there). Sounds like you need to make sure you have good air flow for the cooler (itself)? If you're running an RPM, they say 200 is not kind. They like to see 180 "especially if you're bangin' on it". Seems low to me. I mean, why would you run you ATF through your rad if its 190/200/220/230...? They say the engine cooling temps seen on the DIC are those from the heads, that the Dexcool leaving the rad to the cooler is far cooler, then it hits the cooler. Well, if the cooler comes on at 180......? I don't know. That's why I started the thread. I buddy of mine blew his Art Carr trans up recently. We were on the w-talkies and I aske what his A4 temps were (cruising)... 200 and I imagine higher after we got near the event and he was kinda bangin' on it. That one is coming out and is being replaced w/ a RPM unit. Guess we'll see who blows up first/next.
A4 fluid temps
Thanks!
you should be gtg.
