How different are the 2013 vs 2014 ZL1 superchargers?
 

I have a 2013 ZL1 and the bearing just went out on the snout pulley and I went down to a Chevy dealer and instead of replacing the snout piece, they were replacing the entire supercharger under the extended warranty. Why not just replace the snout? Is there just a big difference between the 2 superchargers altogether?

Chevy only replaced the entire supercharger under warranty. They never just did the snout

Now that they have replaced the supercharger, go straight to a reputable shop and have a solid coupler installed!
https://www.lingenfelter.com/product...l#.W1NlddJKiUk

The new one should have a solid isolator, double check it by removing the belt and rotating the snout pulley back and forth.

GM stopped putting solid ones in and went back to spring loaded....:crazy:

Yeah heard this discussion before, do you have the new TSB that show that?

https://www.camaro5.com/forums/showthread.php?t=487501

My supercharger was replaced last week of May this year has the solid coupler.....

I'm still running the original SC with the spring loaded coupler...several track days... no issue

There was more info on ctsv. A little info here

https://www.camaro5.com/forums/showt...=524868&page=2

I didn’t see an updated tsb that indicated they are now putting spring vs solid.

There is a lot more info on CTSV, as the V2 guys do more upper pulleys than ZL1 for some reason. Starting around 2015/16 is when people starting finding springs on the new warranty replacement units.

Even the solid design has changed to a "not as solid" piece.

It's my understanding, that the original spring loaded design was replaced with a solid coupler for a while, then they went back to a spring loaded design, but the second spring design was also packed with grease/lube.
Since the entire SC assembly is considered a field replaceable unit that is manufactured by Eaton, I doubt that there would be a GM TSB that would show/list the inner details of the coupler.
That info would probably have to come from Eaton, not GM.

The most important change is that the '14 & '15 had a revision improving their S.C. for the rest the only difference that you would see is the change on rear lights and rear diffuser design that's it.

My blower was replaced right before I purchased my car in Nov 2017. I have the newest version with the updated spring coupler, and it has been problem free so far.