Just wondering the difference between the LT1 and LS1 Torque converter? How to tell the difference. Is the bolt pattern different? Bought a used verter and call the manufactuer and i gave them the part number and they said it could be a LT1 or LS1. If its for an LS1 will it fit my 2006 Z-71. Thanks

 

One of the differences is that the pilot bearing on the LS1 is larger. I, personally, have no idea what that exactly means - it was info I got from my tranny builder that I repeated to the place I got my new 'verter from. Not a lot of help, but it is something...

 

Thanks that kinda helps, I'll check it out.