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Rear end gear change....Experts Inside!!patricktroy 01-10-2006, 04:07 PM Want to change the gears to 3.73 on the stock rear end on my 1991...is this the right one to get? http://www.jegs.com/webapp/wcs/stores/servlet/CategoryDisplay?lang=-1&catalogId=10002&storeId=10001&categoryId=26297 part # 555-60010K 87DJP2001 01-10-2006, 04:38 PM No rear gear swap is easy and more so if its the first one. You didn't give any info on what you have now to know if that Jegs kit will work or not. You need to know if your rear is a 2 or 3 series carrier to start with before seaching for parts. patricktroy 01-10-2006, 04:48 PM Well, the best I can tell you it is a stock rear end of a 1991 Z, so I beleive it is a 2.73 gear ratio, and I want to go to 3.73 ring and pinion. So, with the best internet knowledge, I need a 2-series carrier, yet I have found out that mine is a 7.625", where Jegs is a 7.5" kit, but GM blacklash is like .004 to .010., so a 7.5 is a 7.62.....right or wrong?? 87DJP2001 01-10-2006, 06:54 PM Well, the best I can tell you it is a stock rear end of a 1991 Z, so I beleive it is a 2.73 gear ratio, and I want to go to 3.73 ring and pinion. So, with the best internet knowledge, I need a 2-series carrier, yet I have found out that mine is a 7.625", where Jegs is a 7.5" kit, but GM blacklash is like .004 to .010., so a 7.5 is a 7.62.....right or wrong?? Just make sure you do your research....7.5/7.625 grars are the same per GM. patricktroy 01-10-2006, 07:14 PM OK thanks for the info! :bow: Hate to spend $ on the wrong parts! | ||