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Old 11-14-2011, 05:21 PM
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1990 caprice with rear end upgrade questions

Hey wats up guys need a lil help... have my 90 caprice 305 tbi 200r4 trans rebuilt with 2000 rpm stall. I was told my vehicle has a 7.5 10 bolt rear with 2.43 gears. Stumbled across some parts for cheap one was a ring and pinion set with 13-42 gm 7 5/8 stamped i was told it was 3.23 gears which is perfect with 28 teath on the pinion i was just wondering if its true by any chance and will it work with my 7.5 rear and yes its a 10 bolt as well

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Old 11-14-2011, 05:28 PM
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Sounds like you have a series 2 rearend with the 2:73s and if so yes it should work fine if the 3:23 are for the series 2 rearend also.JMO
3:08:1 & down gear ratios - Series 2 case 3:23:1 & up gear ratios - Series 3
But they do have the 3:23 for the series 2, just don't know what exactly the 3:23 you have came out off. JMO


Cole
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Old 11-14-2011, 07:13 PM
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How can i identify that to be sure? I still have the part identification code sheet in the trunk maybe yal can school me this is my second caprice well domestic period mainly dealt with hondas so im still learning
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