The question of top speed, speed with 4.11, 4.56, 4.88, 5.13, 5.38 rear ends, and speed in gears keeps coming up. 3.55 1st 59 2nd 89 3rd 122 4th 158 5th 214 6th 317 3.73 1st 56 2nd 84 3rd 116 4th 151 5th 204 6th 302 3.91 1st 54 2nd 81 3rd 110 4th 144 5th 194 6th 288 Transmission 6-speed manual Final-drive ratio 4.11:1, limited slip Gear Ratio Mph/1000 rpm I - 2.66 - 8.3 - 50 mph (6000 rpm) II - 1.78 - 12.4 - 74 mph (6000 rpm) III - 1.30 - 17.0 - 102 mph (6000 rpm) IV - 1.00 - 22.1 - 133 mph (6000 rpm) V - 0.74 - 29.8 - 153 mph (5100 rpm) VI - 0.50 - 44.2 - 153 mph (3500 rpm) Okay, some quick conversions for 4.56 gears. I - 44.5 mph @ 6000rpm II - 65.9 mph @ 6000rpm III - 90.8 mph @ 6000rpm IV - 118.4 mph @ 6000rpm V - 153 mph = 5726rpm (160.3 mph @ 6000rpm) VI - 153 mph = 3930rpm (6000rpm in sixth? To damn fast) For 4.88's I - 41.4 @ 6000rpm II - 61.3 @ 6000rpm III - 84.4 @ 6000rpm IV - 110.1 @ 6000rpm V - 149.1 @ 6000rpm VI - 220.2 @ 6000rpm For 5.13's I - 38.9 @ 6000rpm II - 57.7 @ 6000rpm III - 79.5 @ 6000rpm IV - 103.6 @ 6000rpm V - 140.3 @ 6000rpm VI - 207.2 @ 6000rpm For 5.38's I - 36.5 @ 6000rpm II - 54.1 @ 6000rpm III - 74.5 @ 6000rpm IV - 97.1 @ 6000rpm V - 131.5 @ 6000rpm VI - 194.2 @ 6000rpm[/