Dear Forum Gods

[BigWheelinBubba]

Originally Posted by Deuce450

So the use of Nitrous changes this general rule? If this is the case then why not run 3.90's? On the streetable side I just don't want to be turning 4,000rpm going down the freeway. I generally drive between 70-80mph. This is not my daily driver but I do like to drive the stang to work (40 miles one way) and just take it for a spin when ever I can. Thanks for all the info. this site is the BEST.

Scott, I'll call you today to set up a time.

My C4 w/ 3.73's turns about 4000 at 75... i wouldn't think you'd have a problem with 4.10's and aod, but even if you do you could always get a taller tire like i did to make up for it a little...

[1Quick88]

hopefully someone can help me out with this..

a trans without over drive like a th350 or c4 whatever..final drive is 1:1 correct? well if at 75 mph ur runnin 4000 rpm w/ 3:73's. so at the track when people are makin passes @ 110+ what rpm are they spinning, especially since alot of them run 4:10's or larger?? i dont like taking my motor passed 6k. so is this gonna limit me at the strip so my mph wont be as high??

[Racingqtrsstang]

I've got 373's in my car and it's a good all around gear. I thought about 390's also but when i called around there were 1. much more expensive or 2. weren't in stock and didnt know when they could get them in stock. HO that was over a year ago But i'd say 373

[2L8IWIN]

i have 3.73s and with a 75 shot 26inch tire and drag shocks i think it was like 1.8 60ft not to bad for an AOD