Duramax Diesels Forum Truck of the Week
  #16  
Old 04-14-2019, 10:00 AM
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Two separate bearings. The page on the right, you shouldn't have the trans that far apart if you're only changing the input around
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  #17  
Old 04-14-2019, 10:16 AM
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Long story short it's a complete rebuild. My SC was pretty rough, and I had an LLY 5 speed stock trans. I swapped the bellhousing pump and VB (after swapping out the broken transgo trim A spring) onto the LLY with new clutches.

Edit: it's the SC 02 bellhousing, pump and VB on an LLY trans, with a SC C2 hub, P1 sungear and P2 planetary carrier. everything else is the LLY

I have a slight bearing noise that goes away when I put it into gear that I'm trying to figure out what I did.
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Last edited by adeso; 04-14-2019 at 10:23 AM.
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  #18  
Old 04-14-2019, 10:19 AM
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This was the hub and C2s in the original SC that drove me to use the other trans as a core. I just figured it would be easier to swap Bellhousings pump and VB off the SC since they all looked good.
Attached Images
File Type: jpg hub.jpg (84.7 KB, 35 views)
File Type: jpg clutch2.jpg (122.6 KB, 34 views)
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #19  
Old 04-14-2019, 10:26 AM
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Quote:
Originally Posted by adeso View Post
This was the hub and C2s in the original SC that drove me to use the other trans as a core. I just figured it would be easier to swap Bellhousings pump and VB off the SC since they all looked good.
Why did you need a core just because of the work P1 drive flange and burnt c2? Both a common wear items. I guess Iím confused as to what you actually did.
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  #20  
Old 04-14-2019, 10:29 AM
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I had the lly stock trans just sitting around so just used it instead of ordering new parts. the LLY was stock just slipped a few times so no damage to the hard parts. Kind of regretting that now
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #21  
Old 04-14-2019, 10:38 AM
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I should have put this up front instead of just asking random questions-

I had a SC V trans from 2010 that had a trim A transgo spring break, which lead to some trans lockups-locking up tires on the downshift. I also had a stock LLY trans laying around.

I ordered a rebuild kit, SC C2 hub, P1 sungear and P2 planetary. when I opened the SC up, it had the above damage to it, and instead of ordering new parts, I decided to go to the LLY trans. I put the bellhousing, pump and valve body from my SC (after cleaning and inspecting) onto the LLY trans with the rebuild kit.

The trans shifts great, temperatures stay between 135 and 155 on a 70* day, but I have a slight bearing noise when in P or N that goes away when I put it into gear (stop the input shaft from spinning-so I know it isn't the pump).

To give you an idea of the level of noise, you can hear it just above the engine noise but if I turn my noise airdog on it drowns it out.
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #22  
Old 04-14-2019, 11:06 AM
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Quote:
Originally Posted by adeso View Post
I should have put this up front instead of just asking random questions-

I had a SC V trans from 2010 that had a trim A transgo spring break, which lead to some trans lockups-locking up tires on the downshift. I also had a stock LLY trans laying around.

I ordered a rebuild kit, SC C2 hub, P1 sungear and P2 planetary. when I opened the SC up, it had the above damage to it, and instead of ordering new parts, I decided to go to the LLY trans. I put the bellhousing, pump and valve body from my SC (after cleaning and inspecting) onto the LLY trans with the rebuild kit.

The trans shifts great, temperatures stay between 135 and 155 on a 70* day, but I have a slight bearing noise when in P or N that goes away when I put it into gear (stop the input shaft from spinning-so I know it isn't the pump).

To give you an idea of the level of noise, you can hear it just above the engine noise but if I turn my noise airdog on it drowns it out.
Thatís usually the the converter youíre hearing. Goes away under load.
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  #23  
Old 04-14-2019, 11:18 AM
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it does sound like it is in the very front.
And I am paranoid about my first build so I'm hearing every noise
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #24  
Old 04-14-2019, 12:33 PM
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Quote:
Originally Posted by adeso View Post
it does sound like it is in the very front.
And I am paranoid about my first build so I'm hearing every noise
Id bet youíre fine and you never noticed and now youíre freaking out. Itís common and not a bearing bearing in the trans making that sound.
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  #25  
Old 04-14-2019, 12:37 PM
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last question then I'm done-I hope

based on the pictures on the book I'm not sure if I put the T4 bearing (between P1 and P2)in upside down or not. I was reading that this was a not unheard of mistake back a few years ago-so
It will be really inconvenient for me to pull the trans back out right now is this something that might last 700 miles until I can get the truck back home pull it and make sure/ replace it? I know the right answer is it comes back out asap but it would make my life much easier if I could drive it home if I have some time before it goes.

yes I'm being paranoid.
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #26  
Old 04-14-2019, 12:38 PM
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Quote:
Originally Posted by Evan@LimitlessDiesel View Post
Id bet youíre fine and you never noticed and now youíre freaking out. Itís common and not a bearing bearing in the trans making that sound.
thanks. I'm terrible about second guessing myself lol
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02 Chevy LB7 CCLB, 8 inch lift "lowered" 35s/front end stuff, SDP triple 300s! Dual CP3
Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #27  
Old 04-14-2019, 12:44 PM
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Quote:
Originally Posted by adeso View Post
thanks. I'm terrible about second guessing myself lol
You should quadruple check so you donít have to second guess
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  #28  
Old 04-14-2019, 12:51 PM
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I normally do, but I got screwed up looking at page 97 of the 2017 ATSG item 8.

Ill give you a call Monday and order a T4 from you, and hope it holds together for a few hundred miles
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Mild build engine 100% over inj AD165 LBZ reg, Goerend converter Tuned by Rob
11.70 116 - on 37s
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  #29  
Old 04-14-2019, 01:01 PM
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Quote:
Originally Posted by adeso View Post
I normally do, but I got screwed up looking at page 97 of the 2017 ATSG item 8.

Ill give you a call Monday and order a T4 from you, and hope it holds together for a few hundred miles
T4 is the only bearing that can techinacally go either way believe it or not so donít waste your time worrying about it.
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  #30  
Old 04-15-2019, 07:25 AM
onebaddmaxxx onebaddmaxxx is offline
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Quote:
Originally Posted by Evan@LimitlessDiesel View Post
T4 is the only bearing that can techinacally go either way believe it or not so donít waste your time worrying about it.
Iv pulled some transmissions apart from some big time builders and seen that bearing in upside down...Not that it matters like you said, but imo putting it together as designed is a good practice
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