sdimess84

iTrader: (4)

I have a zexel torsen that I bought from a member here. I went to put it in my s10 using my factory 342 gears. When I put the torsen in, the ring gear barely even touch the ring gear teeth. Took both units and stood them up side by side and there was a 1/4 difference in where the ring gear bolted up.

So how do I know which is which? Im assuming the one that came out of my s10 is a 3 series, but not real sure.

96LT1355Z28

iTrader: (2)

Look at #12 :https://ls1tech.com/forums/gears-axles/412366-rear-end-faq.html

alamantia

iTrader: (10)

2 series came on 2.73 and 3.08 gears

3 series came on 3.23 and numericaly higher

If you meant to say that the ring gear barely even touched the pinion gear teeth it sounds like you have 3 series 3.42 gears on a 2 series carrier

they make a spacer but its crap, the reaon the ring gear is press pit onto teh carrier is so the ring gear stays 100% concentric, with the spacer barely any of the ring gear seats on the register of the carrier thus giving the ring gear a chance to be not concentric. Some people use them with sucess, i personally wouldnt, id try and trade the 2 series for someone with a 3 series if possible

stangkiller2005

iTrader: (15)

can somebody show me the difference in the two? the physical difference?

im swapping rear ends. but both freaking ring gears have same numbers.... one is 12x41 (the one that was on my car) and the other is 12:41 (reard end bought) with a bunch of numbers after.... what gear was in my car?

borninatransam

iTrader: (4)

there is a spacer you can buy for them to make them work. just do a search on summit and it should pop up.

yak

iTrader: (15)

here is my take in it, the pinion is going to sit in the same place n the pumpkin regardless of what series the carrier or gear is. I know that 2 series gears are about 1/4inch taller than 3 series gears. this would lead me to believe that if you stood a 2 series carrier next to a three series carrier (stood them so that the ring gear flange was close to the ground) that the flange would be elevated by about 1/4" on the 3 series carrier.

Hope that helps,

BTW from the sound of it, I would guess you have 3 series gears on a 2 series carrier with no spacer.

Jawsgear

iTrader: (2)

Basically the 2 series case will have alower deck height(ringgear mounting surface) The 3 Series will be the taller of the two. You will not be able to use that 3.42 gear unless yourun a spacer. Otherwise you can get a thick ring gear.

Jeff

382ssz28

iTrader: (24)

If both gears have 12-41 than you have 3.42 gears which is a 3 series case. The numbers after the 12-41 are usually part #'s or/and the date codes.

yak

iTrader: (15)

wrong this is only tee dr GM gears. If they are aftermarket gears they could definately be either two or three series gear.