rear end

[txoutlaw69]

man its a bad day i just blow my rear end or maybe its a good day now i can upgrade it but what is better to rebuild it or just jump in for a moser 12 bolt or a 9 in and what gears to put in it any input would help

[SHovV]

moser 9" FTvV

[Cutlass]

tell us everything about your car's mods and we'll help you with a gear ratio

[Hi-Po]

9"

What are details on your car for gear ratio.

[txoutlaw69]

i dont have any mods yet but i plan to change ls1 for a ls2 and trans

[Cutlass]

Auto or manual?

[JwMonE99]

Auto go with a 12 bolt with 3.73s
6 speed go with a 9 inch with 4.10s

[txoutlaw69]

so whats in the rear now 373 or what

[Cutlass]

no. you should read the option codes and find out. 2.73's (GU2) 3.23's (GU5) for autos 3.42's (GU6) for M6.

[txoutlaw69]

ok i see i have 3.23 so 3.73 is the way to go . for an auto why not 4.10 whats the difference

[JoshieDoom]

ok i see i have 3.23 so 3.73 is the way to go . for an auto why not 4.10 whats the difference

4.10s would absolutey destroy the cars highway drivability. m6s transmissions have a lower output ratio then a4s

[txoutlaw69]

thats good to know cant have that so its 3.73 thanks for your help what about the spindal 28 31 33 does it matter

[JoshieDoom]

thats good to know cant have that so its 3.73 thanks for your help what about the spindal 28 31 33 does it matter

Gear ration will not affect spline count on the axles unless you change the differential etc etc. Gears are a bolt in,then adjust then go thing

[txoutlaw69]

ya i plan to change every thing