I did weigh them, and if I remember the 400 was about 50 pounds more. I have one of each sitting on the bench, so I'll weigh them later today and report back. Had I been smart enough to write it down, I wouldn't be doing it again....I'll weigh them with converters and flex plates for a fair compare lol.

Both have billet aluminum drums, good inputs, and output shafts, and griner clean neutral brake bodies. So they're apples, to apples in parts. The main difference being I'd wouldn't think twice about the 400 @ 2000hp, and be seriously worried about the 727 at 1300hp.

I'm sure plenty of people put plenty of power through 727's, just for me, I'd sweat it. 2 bearings vs 3.