</font><blockquote><font size="1" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">quote:</font><hr /><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">I have a '96 Trooper with "33s and auto tranny. From previous post I was under the impression that the 5.38s would be too low and over rev the engine on the interestate. Is there that much difference in stock tire size bettwen a 1st gen and a 2nd gen?

Adam</font><hr /></blockquote><font size="2" face="Verdana, Tahoma, Arial, Helv, Helvetica, Sans">I'm pretty sure all 4L30E transmissions have .72 overdrive. 5.38 gears + 33's = 2960 rpm's @ 75mph vs 4.55 + 33's = 2500rpm @ 75mph, by my calculations.

My Trooper can cruise all day easy at 3000 rpm.