what kind os sotp performance gain can i get changing from a 2.73 gear to a 3.73 in a posi 89 rs rear end. i have a 700r4 and a stock 350 tpi. also which is the best brand of gear. has anyone had any luck out of motive gears. and what brands offer depth impression gears. sorry about all the questions, im new with a stock ride wanting to pick the right mods. i have a need for speed

 

That's too much gear for a 350 TPI. 3.42 is about as far as you should go.

SOTP is significant, especially off the line if the car hooks up. It won't do a massive amount to your time in the ¼ though, maybe .3-.4 sec.

 

Exactly, good thing you asked and were given a true answer. Don't let what happened to me happen to you. Stock TPIs stop breathing @4500 rpms, and 3:73s will keep you out of your power band. Unless you plan on modding the TPI.

 

if i go with vortec heads or AFR 190's, a cam , and port and polish intake, runners, plenum and headers would the 3.73's work or would i still be better off with 3.42's. im not going to go to the track every weekend but it is not a daily driver. i want a strong running car that hooks that has decent et's. the 2.73's seams to cause my f-body to fall on its face with a stock motor.

 

I would definately get 3:73s then, might want to get posi as well with those mods.

 

already have posi which is a plus. but what brand gear should i go with richmond , motive, summit, who make a good gear for the money.

 

We have plenty of options. I can tell you what our customers prefer, or you can scout the sites to see what people are using. I think I walk on eggshells trying to post specifics here, since 1) I do not want to be perceived as an unwelcomed solicitor and 2) some people think that being contrary is a sport. You are welcome to ask us for details. We have plenty of options and want you to get what's best for you. Visit www.rearman.com .

 

Richmond always comes to mind. That's what I got, and great so far.