What Trans fit an 08 SS LNF? - Cobalt SS Network



Drivetrain Transmission, LSD, Clutch, Driveline, Axles...

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Old 05-14-2018, 06:10 PM   #1  
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What Trans fit an 08 SS LNF?

My transmission housing got busted open running over a rock (Ran over a rockslide I didn't notice on the road). The gear oil leaked out and who knows what is going on inside the transmission.

What transmissions will bolt-in easily? I hear the LSJ version will work, but I noticed there are differences in the the axleshafts. Mine had the OPT G85 with the LSD. Getting an exact replacement is a huge PITA since they're uncommon and all of the ones online are like 2K miles away from me.

What will need to be done to make a transmission from the 05-07 work? Also, will a clutch for the 05-07 work if I swapped in a transmission from that model?

I understand that the one I have is the MU3 and the MU2 is "just a difference in gearing". But is it really a simple bolt-on swap?
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Old 05-14-2018, 06:29 PM   #2  
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A 04-07 lsj f35
A 05-07 lsj g85 lsd f35
A 08-10 lnf f35
A 08-10 lnf g85 lsd f35
A 05-10 base model F23 (gotta know how )
A 11+ F40 found on many ( gotta know how again )
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Old 05-14-2018, 07:21 PM   #3  
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Thank you so much! I will look for the LSJ G85 LSD then
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Old 05-14-2018, 07:24 PM   #4  
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Also, are the mounts the same or different? I really want to do an upgrade to them since I had crazy wheel hop.
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Old 05-14-2018, 09:07 PM   #5  
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Just buy aftermarket rotated mount. Lnf Mount is better than the lsj.
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Old 05-15-2018, 12:54 PM   #6  
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Lsd diffs cost significantly more than non lsd.
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Old 05-17-2018, 12:21 AM   #7  
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Yeah I'm willing to shell out for the LSD. I live in a very rainy climate, so I want all the grip I can get. I've also gotten used to it, so a couple hundred dollars isn't too much for a nice addition.

I just really want to make sure I get the right parts. I am going to buy a new clutch kit and flywheel, as taking out the trans was a PITA and I am going to get as much done as possible while it's out.

What clutch should I get if I'm using the transmission from the LSJ engines? Will I need anything else (different starter, shift cables, axles etc...)
Thanks again!
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Old 05-17-2018, 05:48 AM   #8  
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Flywheel bolts, flywheel-luk from rock auto works from what I've heard, or a factory replacement from ZZP, gmpp clutch upgrade from crate engine depot, 2 quarts of factory fluid. Install new axel seals if it's a used trans, and you should be good. These parts are good ones for the money and will last a fairly long time.
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Old 05-17-2018, 03:16 PM   #9  
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BMW 8spd manual with a FMSR custom 3.0 ecotec
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