TexasPimp

whats the rpm at with 3.73s when going about sixty and is that bad for the motor cruising at high rpms all the time in a 03 mustang gt 5 spd thanks

boduke0220

mine is 2000 at 60 with 4.10's so i would assume around 1800-1900 for you. And no its not, i mean if it was running at like 3500 or something then yea i'd say something but these motors arent built to idle..they're built to be driven..and driven fairly hard. the only time i'd worry is if its 100+ degree's outside buteven then you should still be getting enough air to cool the engine

fordchuck

4k+ is a high cruising rpms. 2k and under is a fine rpm to cruise at. No worries.

DreamerGT

Im not sure what the rpm's are going 60, but It wont hurt the motor.

TexasPimp

i live in texas so its like 105 in the summer thanks for the information

StriderTacticaL

Use this chart has a guide:

http://www.paladinmicro.com/PalMFrame00.htm?wks=spd

Courtesy of Cliffyk....a very valuable member of this forum