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August 08-06-2003, 09:27 AM Hi Guys, How do I check on a casting number on a rear end? Is there a source for that? Thanks for the help. August leichler 08-06-2003, 11:40 AM You don't tell the year in question, but you might check this web site... http://www.gnttype.org/numbers/axcodes.html :cool: leichler 08-06-2003, 12:55 PM Just in case the web site referenced above doesn't cover your vehicle, locate the axle code on the back-left of the shaft housing. Let me know what you find and I'll identify what it's supposed to be. :) 87ElCamino 08-06-2003, 03:42 PM Your 87 El Camino will either have a 2.41, 2.56, 2.73, or a 3.08 rear end. All 5th generation El Caminos are the same. Take a look at this page to ID your rear end: Malibu Nirvana Gear Ratio Code (http://www.malibunirvana.com/technical/rear_ends/axle_code.html) :mrgreen: August 08-06-2003, 04:20 PM Thanks for all the info guys, question has been answered by the gurus here. :D | ||