so heres where im at right now basicly, ...no low end power, and awesome middle and upper rpm power. ported polished heads,lt1 cam. full exhaust, carbed 305 91 rs

so what should i get? currently has stock 2.73.

i need a link to the gears, and need to know what works, what series i need, ect ect. just break it down like im stupid because i know nothing about rear ends and transmissions.

 

you will have to go from 2 series carrier to a 3 series if you go lower than a 3.08 ratio(323.342,373) i would probably go to 3.73
there also ring gear spacers so you dont have to change carriers
i would also recomend a professional to set them up too!

 

If you get the SLP posi it has a 3 series carrier. So 3.08 and up gears. I say go with 3.73s most love them. Get a slp posi, 3.73s, and take it to a shop.

 

I bought the SLP posi and richmond 3.73s for my 91 RS. they haven made their way into the car yet, but i thought you would like to know what i picked. Rock on

 

so all i need is ...3 series 3.73s. and slp posi, and im good to go?

 

start saving for new rear tires

 

well yeah, but im saying, ALL i need is , the slp posi , which converts it to a 3 series carrier correct??

 

thats it, but professional setup is needed,correct pinion depth
,pinion crush and backlash are critical!if not bad howl/ ruined gears are the result.


i like used gm gears as pinion depth if rear bearing is still on is pretty much right on then just pinion crush, backlash and youre there. i have some 3.73factory gm gears avail now if you want them let me know asap cause ill list them on ebay tonight.

 

well yeah, im getting it prof installed.. i was just trying to figure out indefinatly that all i needed was posi and 3.73, i was under the impression that i had to buy other things to make it a 3 series carrier....

how much are you asking???????

 

ive been doing 125.00+15$shipping includes both pinion bearings as removed along with easier setup these are factory gm gears in good used cond out of a v-6 model so they havent been thrashed on ....yet. and gm gears are quiet! not like aftermarket

 

well,if it comes *complete* and all. and you are sure they are 3.73's beyond a shadow of a doubt, ill definatly get them.

itll be about 1 month though before i can get them, but i definatly want them.

what carrier are they???

and what exactly did they come out of???

 

Don't forget new speedo gears for the tranny.

Kat

 

A 91 RS should have an electronic speedo that would compensate...