3:90 rear

[Tripleduece]

Anyone running these? and if soo are they the ones from pro shifter? Would like to know what the idle is at 75 in fifth. thanks,joe

[bigred90gt]

Originally posted by Tripleduece
Anyone running these? and if soo are they the ones from pro shifter? Would like to know what the idle is at 75 in fifth. thanks,joe

First, its Pro 5.0. Second, if you are going 75 in 5th, its not idle. I'm not trying to be an ass, just FYI.

If I had to guess, with a 26" tire, you would be right near 2550 (somewhere between the 3.73's and 4.10's).

[Tripleduece]

well exuse me--what rpm range would i be in.
not the sharpest tool in the shed after a day at work.sorry
but thank you non the less

[bigred90gt]

Originally posted by Tripleduece
well exuse me--what rpm range would i be in.
not the sharpest tool in the shed after a day at work.sorry
but thank you non the less

I really wasnt trying to be an ass. i came up with that number using this sites calculator. I just took the RPM for 75 with 3.73's and 4.10's and averaged it, since the 3.90's are pretty close to between the two. The 2550 rpm I posted above might be off a little, and it could vary depending on the size of tire you are running, but it should be pretty close.