Thanks for all the replies (tool and clip). About that clip . . . that's really good to know. I've never had a 4L60 apart before and that clip isn't mentioned in the new book I just bought. Or if it is, I missed it. Book is . . GM Overdive Transmissions - Builders and Swappers Guide by Cluff Ruggles.
Since many of you obviously know more then I do on this subject . . . about the rear planetary. How in heck does a person know what to use in an upgrade.
This trans has an OEM four-pinion rear planetary. It's worn out, along with the sun-gear in the middle. Main problem is all four gears are wobbly and loose. Ready to fail.
OK, fine. I know GM upgraded it to a five-gear setup as used in the 4L65E. But, this so-called higher-torque part scares me in a few ways.
#1, it uses powdered metal gears which I can't believe are as strong as heat-treaded steel.
#2 there are tons of aftermarket clones out there from Taiwan and China. Quality unknown.
As least my four-gear unit is all steel. I can just rebuild it.
Am I the only one that gets nervous with the idea of powdered-metal gears in a high-stress area? I know GM says it's stronger, but I also know it's a heck of lot cheaper to build. This has me suspecting that they had to use 5 "powder" gears to make it as strong as the older unit with four steel gears.
I've read many articles ad-nauseum, and still don't know what to believe.
Sonax sells a steel gear rebuild kit. I'm tempted to find a factory Delco 5 gear setup - used - and replace those gears with steel ones from Sonax.
I'm not trying to cut cost here. I just don't trust everything that GM says and does. Nor do I trust all aftermarket parts suppliers. I'd like to do this upgrad once and have it last a while. 4L60 in a turbo-diesel rig that weighs over 7000 lbs. needs all the help it can get.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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