differential case differences
Thread Starter
Drifting
Joined: Nov 2003
Posts: 1,288
Likes: 2
From: tucson az
differential case differences
i knew about the difference in the vss between a two and tree series case.. however i just noticed a difference between two three series cases i have....one has extra reinforcing ribs on the top side of the case beefing up the mounting flange....
has anyone else noticed this....also are the extra ribs unit breaking off at the mounting flange....is the extra rib unit a z06 piece?....
inquireing minds want to know.........
has anyone else noticed this....also are the extra ribs unit breaking off at the mounting flange....is the extra rib unit a z06 piece?....
inquireing minds want to know.........
Collections Hold
Joined: Aug 2002
Posts: 2,899
Likes: 6
From: Fort Wayne Indiana
Both the 2-series and 3-series cases come from the manufacturer with either the 1 or 3-rib mounting flange reinforments. Both types will and have been broken under high power/low gear ratio applications.
We have also seen where the Z06 case has come with either a 1 or 3-rib mounting flange reinforment at random also, so there certainly is nothing special about that case itself. In the early model cases, it was completely random as to what type of case one received from the manufacturer, no matter what gear ratio was O.E. installed, but as of 2003 and up, ALL 2 and 3-series cases come standard with 3-rib mounting flange reinformant from the manufacturer no matter what gear ratio is installed from the manufacturer. For 95% of the market, either version suits their needs just fine without any negative issues what-so-ever, but for the hardcore drag racers, it's recommended to opt for the later version, as they need all the help/strength thay can get at the track.
However, there is no strength difference between the two types when our differential strut is is utilized for added driveline rigidity because the strut bracing assembly/bracketry removes the severe structural loading from the differential/transmission case at that crack-prone mounting flange area anyway and spreads the shock loading across/evenly to the strongest areas of the entire driveline, preventing driveline fracture. These differences are one of the reasons why we developed the M6/M12 and A4 differential strut kits in the first place. Necessity is often the driver of invention...
Best Regards,
DTE
We have also seen where the Z06 case has come with either a 1 or 3-rib mounting flange reinforment at random also, so there certainly is nothing special about that case itself. In the early model cases, it was completely random as to what type of case one received from the manufacturer, no matter what gear ratio was O.E. installed, but as of 2003 and up, ALL 2 and 3-series cases come standard with 3-rib mounting flange reinformant from the manufacturer no matter what gear ratio is installed from the manufacturer. For 95% of the market, either version suits their needs just fine without any negative issues what-so-ever, but for the hardcore drag racers, it's recommended to opt for the later version, as they need all the help/strength thay can get at the track.
However, there is no strength difference between the two types when our differential strut is is utilized for added driveline rigidity because the strut bracing assembly/bracketry removes the severe structural loading from the differential/transmission case at that crack-prone mounting flange area anyway and spreads the shock loading across/evenly to the strongest areas of the entire driveline, preventing driveline fracture. These differences are one of the reasons why we developed the M6/M12 and A4 differential strut kits in the first place. Necessity is often the driver of invention...
Best Regards,
DTE
