I Might Just Know What I'm Talking About
Join Date: Dec 2006
Location: S. CA
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Re: More 700r4 tech questions, mods, shifters...
I have the 4L60E behind my SBC....it's the electronic version of the 700R...
The 700R evolved to replace the TH350 and 400. Some people may disagree, but the general censuses is that the 700R is as strong if not stronger than the old TH400. The early versions had some problems....but by about 1988 I believe they were worked out.
Considering that GM uses the tranny in all rear wheel drive vehicles including light and medium duty trucks....they must have a lot of faith in it. I know they held up well in police car....I never had any tranny problems and we dog the crap out of our cars.....
I agree with dropping the pan, looking for trash and changing the fluid and filter....but, I would not bother with a shift kit...you are already going to have the problem with the fact that your jeep is lighter than what it is used to...and depending on what gears you have, your shift points may not be where you want them. A shift kit may only make it seem worse and will not do anything to extend the life of the tranny.
Yes...do the tranny cooler...the cooler you keep it, the longer it will last. The gauge is a good addition to make sure your not killing it when you have those long slow climbs up a hill.
As for shifters...you have two choices...mechanical or cable. My shifter is a cable shifte from a 99 corvette. Real compact.
You are going to love it....I do not miss driving the stick....especially here in LA...where I really like it is on the hills...you know the kind where one gear is too low, bu the moment you try to upshift, you come to a stop...what I like even more is that I can enter the fwy and drink my coffee at the same time.