What rear do I have

[Transamws686]

I am just curious if a I have the 2.73 or the 3.23

it is a 1998 transam non ws6.
ty

reason I ask is I am not the original owner, if this in not enough info how can I find out?:confused: :help:

[eboggs_jkvl]

Look on the door sticker for the GU code

LS1 A4 GU2 2.73 Standard
LS1 A4 GU5 3.23 Optional

E:)

[jmd]

What E said.

&

rpm @ 70mph will be close to 2700 in 3rd gear with 2.73 ratio.

rpm @ 70mph will be close to 3200 in 3rd gear with 3.23 ratio.

[Transamws686]

dam just checked......GU2