I am putting a 6.0 in front of a built up 700r4. I was just going to use the 4L80 flex plate and lengthen the holes (from a 298mm bolt circle to a 300mm bolt circle) but is there a better option? What do you guys do with your camaro's and Firebirds do when you swap the 6.0 block in?

 

If you need the adapter for the converter, Advanced Adapters has a kit with the flywheel and converter bushing. I opted for the TCI flywheel and the bushing from Advanced Adapters.

 

Hmmm, I talked with Advance about this issue and they told me that they didn't have anything available for that kind of modification. I'll have to get back on the phone and try again.

 

If you call Advance again talk to salesperson 627b. That is who helped me.