keysersoze Posted August 16, 2008 Share Posted August 16, 2008 In case anyone was curious...... This information is from the 2008 Factory Service Manual and im not sure if it applies to any other model years. The two letter code is supposed to be on the rear differential in white paint. Rear Differential Code---Reduction gear ratio---LSD CD --- 4.444 --- Viscous CF --- 4.444 --- Viscous EW --- 3.900 --- Viscous HY --- 3.545 --- Torsen JE --- 4.111 --- Viscous T1 --- 3.900 --- None T2 --- 4.111 --- None TP --- 4.444 --- None XJ --- 4.111 --- None XU --- 3.272 --- Viscous XZ --- 3.083 --- Viscous Link to comment Share on other sites More sharing options...
spiralsmurf Posted August 18, 2008 Share Posted August 18, 2008 So a 5MT legacy should have JE on the bottom Link to comment Share on other sites More sharing options...
Wang Lung Posted August 18, 2008 Share Posted August 18, 2008 There is a sticker on mine that says XZ. What does 3.083 mean? Link to comment Share on other sites More sharing options...
profmathers Posted August 18, 2008 Share Posted August 18, 2008 HY? Is that a Spec-B item? Didn't know they put a Torsen in 'em... Link to comment Share on other sites More sharing options...
Long Island Legacy Posted August 18, 2008 Share Posted August 18, 2008 Im going under my car right now lol. Link to comment Share on other sites More sharing options...
RJS5689 Posted August 19, 2008 Share Posted August 19, 2008 HY? Is that a Spec-B item? Didn't know they put a Torsen in 'em... Yea, Spec.Bs use a Torsen differential. Link to comment Share on other sites More sharing options...
jomamma Posted August 20, 2008 Share Posted August 20, 2008 There is a sticker on mine that says XZ. What does 3.083 mean? do you have an n/a? Link to comment Share on other sites More sharing options...
keysersoze Posted August 29, 2008 Author Share Posted August 29, 2008 There is a sticker on mine that says XZ. What does 3.083 mean? Here is a link to a site that has a great explanation of how a change in the rear diff gear ratio can affect the performance of your car. Granted, they are talking about a 1978 Pontiac T/A but the principle is still the same. http://www.wallaceracing.com/reargear.htm This could also answer the debate about why the spec.B "seems" faster or more powerful than the GT Link to comment Share on other sites More sharing options...
Wang Lung Posted September 1, 2008 Share Posted September 1, 2008 Thank You. Link to comment Share on other sites More sharing options...
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