Just thought I'd share this info with anyone looking to delete the AIR/smog pump from their accessories. This is on a '92 Z L98 block with the A/C delete pulley, tensioner, crank, w/p, alt, and power steering stock pulleys. I used a string to measure the approximate length belt I'd need. My stock belt was around 95" I believe. I measured around 96.2-96.8" with the string. I spent about 45minutes at Autozone searching through their selection and measuring belts to find one that would possibly fit. I went with the Good Year Gatorback Poly-V belt. It's a 6 rib belt part numbers:
6PK2455
4060967 (I believe the 967 means the belt is 96.7" long)

I just installed it routing it for the smog pump delete (around the A/C delete pully, down around the bottom of the crank running counter-clockwise, up around the w/p running clockwise, over to the steering pump CC-wise, up and over the alt. CC-wise and under the tensioner.
The belt fits perfectly. Hope this helps someone out.

- Joel

 

This is already written up in the tech articles section. In that article they specify a 96.8" belt. I found that to be just a smidge too long. I would say that ~96.5" would be just about dead-bang perfect.