Originally Posted by nismo619

jfAIRLADYZ HAS REALLY JONIED THE DARK SIDE ! i did caculate my mph on my 82 280zxt 1st = 0-20-25 mph ---2nd 26-35-40-45-- 3rd 40-70 4th from 70- 85 possable 100mph 5th gear u should be able to hit 140mph or more..i was racing a mustang gt with the 160 mph speedo and when we were flaying down the road i was right beside him 5th gear 5,600 rpms when we pulled over he asked me how fast i was going and i told him maybe 140.. and he said yea right he was almost at 160 mph he said..