[Formulajones]

Originally Posted by ponjohn

This is of interest to me.

I plan 46x build, 4l80e. I was going to use a 3.70 gear in a 9 inch.

What I am challenged with is the cam selection, how do you know that cam will tolerate being locked up at 1800 -2000 RPM?

I hope this adds value to this thread.

That's the beauty of having an "E" transmission such as a 4L80 or 60. You can precisely control the lockup via laptop and make it do whatever whenever you want. That's why I love these electronic control transmissions with radical engines. I can run around in 4th gear and make the converter lock or unlock in any condition. Just takes a little test driving to see what your engine tolerates and then adjust accordingly.