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jmader · 09-05-2013, 07:29 AM

I'm probably going to be looking for a 327 with engine code YS. Does anyone know what the A.I.R. option is?

09-05-2013, 07:29 AM	#10
jmader Registered User Join Date: Aug 2013 Location: Grand Island, NE Posts: 1,483	Re: 1967 GMC V8 Engine Question I'm probably going to be looking for a 327 with engine code YS. Does anyone know what the A.I.R. option is?