Hi I was wondering does anyone know what the shortest fan clutch gm made was this is for bbc and short water pump it has to be shorter then 3"

thanks Bob

Check this site out. On page four starts two pages of their fan clutches and the spacing diam. for each. The big block fans have a larger bolt spacing on the water pump and the fan than the small blocks.

www.haydenauto.com/catalogs/hayden/2007-hayden-fan-clutch.pdf
warning 1mb-- may require you to load manualy. File about 60 pages

Thankyou for the link now i have alot of comparing to do

Bob