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4l80e question (overdrive sprag)

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Old Jun 28, 2021 | 07:15 AM
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Default 4l80e question (overdrive sprag)

Ok just need some confirmation on the overdrive sprang, does is spin both directions or is it a one way sprag? I'm buttoning everything back up and notice the over drive plant spins freely both ways. The sprag is brand new. I couldn't upload the video keeps saying wrong format here goes the imgur url.

http://imgur.com/a/sDWqHKL


Last edited by LS480; Jun 28, 2021 at 07:17 AM. Reason: update to clickable link
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Old Jun 28, 2021 | 07:21 AM
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Here goes the sprag it self

http://imgur.com/a/pBLvG10
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Old Jun 28, 2021 | 07:33 AM
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one way only
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Old Jun 28, 2021 | 07:38 AM
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Originally Posted by MaroonMonsterLS1
one way only
That's what I thought but it didn't say if it was in the ATRA manual thanks I'll order another sprag hopefully that's the issue.
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Old Jun 28, 2021 | 10:19 AM
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are you mixing and matching early and late parts?
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Old Jun 28, 2021 | 10:37 AM
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Originally Posted by MaroonMonsterLS1
are you mixing and matching early and late parts?
No its all (2003) from the same unit, im doing a ck performance master shift calibration kit , new clutches, steels, bushings, and bearings. I did have to disassemble the over drive planet (in video) to replace one of the bearings in it.
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Old Jun 28, 2021 | 10:55 AM
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Op are you checking the sprag properly? In the video it looks like the lower part of the sparg race is just spinning in the clutch drum. So it is going to turn both ways because there is nothing to hold it. Shouldn't you hold that sprag race in one hand and turn the other race with the other hand? I don't know much about 4L80Es, but it doesn't look like it is being test correctly to me. If I am wrong just disregard.
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Old Jun 28, 2021 | 10:58 AM
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Originally Posted by bbond105
Op are you checking the sprag properly? In the video it looks like the lower part of the sparg race is just spinning in the clutch drum. So it is going to turn both ways because there is nothing to hold it. Shouldn't you hold that sprag race in one hand and turn the other race with the other hand? I don't know much about 4L80Es, but it doesn't look like it is being test correctly to me. If I am wrong just disregard.
Never mind I think I see how it works now.
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Old Jun 28, 2021 | 06:20 PM
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Can we see a high quality image of the Inner-Race?
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Old Jun 28, 2021 | 06:27 PM
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Originally Posted by vorteciroc
Can we see a high quality image of the Inner-Race?
this is one I bought, the original one was scored pretty bad.



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Old Jun 29, 2021 | 07:27 AM
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looks like you've mixed an early outer race with late inner race/sprag
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Old Jun 29, 2021 | 08:12 AM
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Originally Posted by MaroonMonsterLS1
looks like you've mixed an early outer race with late inner race/sprag
really so which one is which i bought it as a complete unit?
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Old Jun 29, 2021 | 09:21 AM
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Set the roller inside of the outer race and see how it fits
post a picture
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Old Jun 29, 2021 | 09:30 AM
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Originally Posted by MaroonMonsterLS1
Set the roller inside of the outer race and see how it fits
post a picture
Ok I will I did that as night but forgot to take a picture it goes in fairly easy.
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Old Jun 29, 2021 | 05:37 PM
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Originally Posted by MaroonMonsterLS1
Set the roller inside of the outer race and see how it fits
post a picture




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Old Jul 4, 2021 | 10:44 PM
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the one way clutch itself appears to be upside down. I install the one way clutch into the overrun drum first. the internal notches of the one way will match the race. then install the planet over the drum and once it engages the one way it will only go one direction to engage all three frictions. the drum itself looks like an early version though, I may be mistaken. if it hasn't been replaced/changed you should be good.
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Old Jul 6, 2021 | 05:37 PM
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Originally Posted by Tranzman
the one way clutch itself appears to be upside down. I install the one way clutch into the overrun drum first. the internal notches of the one way will match the race. then install the planet over the drum and once it engages the one way it will only go one direction to engage all three frictions. the drum itself looks like an early version though, I may be mistaken. if it hasn't been replaced/changed you should be good.
ok update idk if I wasn't holding my mouth right or what but I got it lock up and spin one way with the sprag I've been trting. New sprag came in and got it installed and is locking up... but one of the metal things popped but went back in fine and still locks. Should I get a third sprag or just roll with it.
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Old Jul 6, 2021 | 06:07 PM
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If you are asking about one of the Rollers from the One-Way Roller-Clutch...
Then it is fine.

The Rollers can fall out when the One-Way Roller-Clutch is not assembled in between the Races.
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Old Jul 6, 2021 | 06:11 PM
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Originally Posted by vorteciroc
If you are asking about one of the Rollers from the One-Way Roller-Clutch...
Then it is fine.

The Rollers can fall out when the One-Way Roller-Clutch is not assembled in between the Races.
Ok thanks for the quick reply. I'll start assembly and checking clearance tomorrow.
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