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Buick455 · 08-09-2010, 01:19 PM

I looked up belt part numbers for A/C vs no A/C and it looks like the Alt. and Air pump are 1" longer with A/C and the belt that runs the A/C comp. also runs the PS pump. I am not sure why the different belt lengths but if anyone knows or has a photo of a 85-87 with A/C that would help.

08-09-2010, 01:19 PM	#2
Buick455 Registered User Join Date: Mar 2010 Location: Amherst VA Posts: 150	Re: A/C pullies vs no A/C (1987 GMC V2500) I looked up belt part numbers for A/C vs no A/C and it looks like the Alt. and Air pump are 1" longer with A/C and the belt that runs the A/C comp. also runs the PS pump. I am not sure why the different belt lengths but if anyone knows or has a photo of a 85-87 with A/C that would help.