Originally Posted by chantspel
Well I figure if I do the shift kit now than I'll refill with dex 6 and hope for the best
I'm surprised nobody here has mentioned this yet.
As the weather has been warming up, we've been getting a LOT of threads over on w-body.com reporting transmission slipping, hesitation during shifts, or other types of erratic shifting. Most members report that the transmission is perfect when its cold.
Which should be a no brainer in my opinion. I had a buddy of mine check his transmisison temperatures while cruising up a hill at 7000 RPM. He reported 260 degrees F!!!!!
That'* very and unnecessarily hot.
Perhaps you can see where I'm going with this. Every person there who has installed a transmission cooler has reported that they are no longer having the problems. Not only may it solve your current probelm, but it may also extend the life of your transmission. I didn't mess around; I put in one of those RV sized transmission coolers. It takes a minute or so to warm up in very cold weather, but otherwise, it will stay dead under 210 degrees F while running it hard up a mountain for extended periods of time, and stay dead on 10-20 degrees cooler than the engine the rest of the time. Mine is run first through the radiator, then to the cooler, then back to the trans. I have a 180 degree t-stat. I too am using Dex 6.
Start with a transmission cooler. Get a nice beefy one, mount it properly, and go from there. If your car isn't having problems when its cold and it is having problems when its hot, that should be an indication that your transmission is running too hot.