i drive alot on the highway at high speeds, i take alot fo 30 minute to an hour trips and the occastionaly day or so trip. i drive a NA thats been built up (see: http://www.supramania.com/forums/showthread.php?t=10934 for car specs) and if i do 85 im at about 3800rpms and 100 is about 4500rpm.......i know this is cause of the 4.10 gearing in the NA rear diff but is this bad for my engine to run at a constant between 3800rpm to 4500rpm i dont want to blow my motor or break anything else so am i gonna need to change out my rear end to get the abalitity for these higher constant speeds? i am planning on a 1jz swap but thats not for a few months before thats complete and im moving to florida before then so im gonna be doing ALOT of long distance driving.
is this good, harmles, or bad?
- Thread starter NeoJester
- Start date
you could put 3.91's or 3.73s in if it bothers you, but it shouldn't hurt anything. Maybe another thing to try would be driving the speed limit. That should bring the RPMs down a good bit
i often leave my car in 4th on the freeway. i either forget, or dont care. 4500 feels the same as 3000
