3600 was a bit loose or the converter clutches not rated for the hp/tq? I bet the stock converter would not have been too bad.
'15 Z/28 #325 black a/c & stereo. 2:11 VIR Full 1:45.531 Summit Point Shenandoah Circuit
Advanced Induction cylinder heads & B-3 cam by Race Proven Motorsports. 575rwhp/500rwtq
'12 ZL1 10.52@131 1.55 60' 2:13 VIR Full (sold)