t2 boost brotha

Hey guys what's a good brand of gears to go with when upgrading your rear gear? I running a crazy set up and just want something better than stock. I have a s2000 swap turbo charged putting down 300hp. Want short gears. Help ya people out

Sh00bs

iTrader: (8)

gsl's came with 3.9 lsd
gslse 4.1 or 4.11 idr
mazda b2200 in the 80's will give you a 4.44 pumpkin you can drop in
and the front diff of a certain year kia sportage will give you 4.77

Boriquaguerrero

iTrader: (18)

4.44 from front diff 1995 kia .

Sh00bs

iTrader: (8)

i believe you're getting it confused with the b2200 gears. See here:
need info regarding diff ratios - Kia Forum

kia diff is 4.77/4.78

Boriquaguerrero

iTrader: (18)

thats a negative , 1995 front diff is 4.44 is different that the rest i found out the hard way .94 & 96 has 4.77. i went to junkyard and got both types. https://www.rx7club.com/1st-gen-arch...s-pics-667307/

wallyrx7

iTrader: (1)

Not to thread jack here but I am not sure this statement is correct. I got a 95 sportage front diff of ebay and I counted the splines when I put it into my rx7. This was 3 years ago but I am positive it was 4.77.

My pinion seal is currently leaking so I need to take it out anyway. Will double check.

Boriquaguerrero

iTrader: (18)

i got mine from a actual junkyard and removed it from the 95 kia i even check the door vin to double check year.

wallyrx7

iTrader: (1)

Oh, I'm not saying I don't believe you. But for sure the diff I got is 4.77 and from a 95 so...

I did some internet snooping and found the real difference is SOHC vs DOHC motors, not the year.

Check out this amazing website: Very helpful in general.

SOHC Sportages = 4.44
DOHC Sportages = 4.77

Maybe this should be posted in the Kia Diff sticky as I could not find this info easily on any forum and is an important distinction.

Saela

iTrader: (1)

Will any of these pumpkins (kia/b2200/etc.) swap directly into a 1979 rear axle or would I need to get a newer rx7 axle/ completely different axle?

DriveFast7

iTrader: (1)

4.44 in the Rx7 and 4.625 in the REPU. W00t!