Denny Posted December 11, 2023 Share Posted December 11, 2023 how do you tell what numbers mean on the rear end and tranny and if there numbers matching to the car? thanks Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted December 11, 2023 Share Posted December 11, 2023 There are no numbers like the vin on the engine and trans. There is a build date and axle codes. If assembled within 6 months prior to your cars build date, it is the correct rear for the car. There is a rear end decoder in the resource section. 1 Quote Link to comment Share on other sites More sharing options...
Canuck Posted December 13, 2023 Share Posted December 13, 2023 There are decoding pages here for the transmission and rear end. https://www.firstgenmc.com/forums/index.php?/resources/resourcespage/ 4 Quote Link to comment Share on other sites More sharing options...
stangeba Posted December 13, 2023 Share Posted December 13, 2023 Thanks for this information. I haven't look at this section in a long time. It is so well done and helpful. 2 Quote Link to comment Share on other sites More sharing options...
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