3.55
 

is that a good gear for me? i have a AOD but lost the O/D when i got the B&m shift kit...i pull 2grand at 80...i'm not looking for crazy stuff or anything just a little bit more seat of the pants feel...and i'm gettin sick of the 2.73's...who needs to save gas anyways?...:rolleyes:

Re: 3.55
 

Why did you lose OD?

Re: 3.55
 

Most peple that go with 3.55's end up going to 3.73's or 4.10's anyways so you may as well start with 3.73's IMO.

I have 3.27 gears in my auto stang and even they are a big improvement over stock.

Re: 3.55
 

i'm not looking to completely drag this car...its my DD and i'm going to keep it that way for as long as i can:cool: ...thats why i'm going with the 3.55's middle of the road IMO because the shift kit took it out i'm guessing

Re: 3.55
 

sorry i pressed the post button to many times...

Re: 3.55
 

is there any one on here that can tell me what kind of RPMs i'd be pulling with 3.55 or 3.73 at 55 with a AOD, and is there a fourmula that i can use to tell me what i might be pulling? i'm at 1,400 right now at 55

Re: 3.55
 

i'd definitely go with the 3.73's, and how are you doing 55 at 1400 rpm in drive, does anyone else think that sounds a bit off. i think you still have overdrive functioning. set up your problem as a proportion. the gear ratio and the engine rpm are directly proportional (in other words as one number increases so does the other). Now given your scenario where you are turning 1400 rpm with 2.73's and you want to know what rpm you'll be turning with 3.73's, and your speed of 55 mph is the constant between the two events you would put 1400/2.73 = rpm/3.73. Your unknown is the engine rpm, so its a matter of cross multiply and divide. Multiply 1400 times 3.73 and divide by 2.73. i came up with 1912.82 rpms this will work for any gear ratio you plug in. I wish I could've used stacked fractions it would look alot nicer.

Hope this helped.

Re: 3.55
 

most deffiently(sp), i'm gonna be doing some hwy driving so 3.55 seem perfect for me...thanks man:cool: