What is RPO code YD3? ("Proc Opt Axle") - The 1947 - Present Chevrolet & GMC Truck Message Board Network

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What is RPO code YD3? ("Proc Opt Axle")

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09-01-2009, 08:36 PM	#1
Number21 Registered User Join Date: Aug 2009 Location: Oregon Posts: 611	What is RPO code YD3? ("Proc Opt Axle") I have a '79 C30 with the 14 bolt FF rear end. I didn't think there was anything special about it until I noticed I could do 2 legged burnouts. I have the original build sheet and it lists RPO code "YD3" and says "PROC OPT AXLE". What does that mean in english?

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