Hello Mike! I don't know too much about Rancheros, but if the front end accessory drive is the same, then these measurements should be helpful that I took from my 429 SCJ Mustang. The powersteering belt (which also wraps the crankshaft pulley and water pump) is 51.5". You didn't ask about the alternator, but I checked it as well in case anyone is interested. It also wraps the crankshaft pulley and is 34". These belt measurements are taken at the O/D (or circumference) of the belts. I don't know how these numbers match up with any published info, but these sizes fit just right on my engine. I do not have A/C, so I can't supply any info on that belt. Good luck and I hope you continue to visit this web site!
Posted on Mar 13, 1999, 9:51 PM from IP address 205.188.200.24