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Old 04-10-2011, 09:11 AM
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Lower reverse clutch race and new sunshell, is a mod needed

I noticed a differene in the clearance between Lower reverse clutch roller race and new sunshell.

As the coller is wider on the new sunshell therefore there is less clearance.

Do the the inside tabs (8 of them) need to be taken back 0.019" to match the original clearance ??







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Old 04-10-2011, 12:04 PM
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Do Not Machine Those Tabs!!!

Those tabs lock into the rear planetary reaction carrier. The clearance of the shell to those tabs is irrelevant. The shell is splined to sun gear, and the sun gear should run true on the shaft(you replaced the bushings right; wider ones or 2 right?). By the time there is enough slop in the output shaft bushings to allow contact between race and shell the shell is gonna "eat" the case. Matter of fact the "beast" shell is more likely to contact the case or an improperly positioned anti-clunk tab. DO NOT MODIFY! Install it and forget. Put the f'ing micrometers away and assemble. I know you are just trying to thorough,but I think you have gone too far. Stop outsmarting yourself!
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Old 04-10-2011, 12:48 PM
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Hay who told you i just got a new digital verni caliper LOL, point taken.

Yes all new bushings, is there enough room there for 2 bushings?

So Whats this guy going on about watch to the end of the clip, he rips out the die grinder and and knock of a few thou.............. http://www.youtube.com/watch?v=zFVEMhCHZRU
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Old 04-10-2011, 01:50 PM
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Ive never done it that way.

Honestly, I have never had to clearance like that. But I can see no harm in how he modified it with a grinder. So I say try it out. When I read your post early I assumed you were gonna cut all lugs.
The important thing to mention is the use of a good bearing. If there is slop in the sun gear the sun shell will move. Like I said earlier, with proper bearings and setup that shell should never contact the lugs.
Earlier in the video he talks about the wider bushing. He didn't mention it, but you can use two bushings with a little effort(I just order the wider bearing). He did make light of the fact of an incorrectly installed clunk clip and snap ring. INSTALL THOSE WRONG AND YOU WILL THROW METAL SHAVINGS. Don't ask me how I know.
Good Luck
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Old 04-11-2011, 07:14 AM
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Sound like you've changed your tune a bit Ethn.

Hay, it sound logical, the only thing holding me back form doing it, is the guys with experience on this forum aren't chirping in with there feedback.

Grinding down the low/reverse clutch roller race looks something like this (see below)

Any constructive feedback like: "its a great idea" or " a waste of time!!" would help here guys.

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Old 04-11-2011, 07:29 AM
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Learn something new every day

Yep, I changed my tune a little after watching his video and thinking hard about it. After watching his video and seeeing how he only rounds the edges; I can't argue with his method. I can't figure any good reason why not to clearance. I can only speak from my experience. I've installed many "beast" shells and have never clearanced like the guy in the video. But that doesn't mean I've been doing it right. thanks for sharing the inforation, you might have taught me something.

So I'm gonna say based on my experience: Go for it! An ounce of prevention saves a pound of sweat or something like that
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Old 04-11-2011, 11:08 AM
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the count so far:
Yes do the mod =1

Not sure =1

dont do the mod =0

Calling on all 4L60e tranny builder !!! can you here me !

give us your vote.
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Old 04-11-2011, 03:08 PM
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Go for it.
It shouldn't hurt anything.
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Old 04-11-2011, 08:21 PM
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Ii have installed hundreds of the "Beast" drive shells. never modified anything for clearance.

thrust washer on the Beast is a 4 round tab design. Easy to over look the washer in the box
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