I have Earl Williams mounts I think the are 3/4” forward. Shopping for pulley and bracket system. Would like to buy everything as a kit. Going with power steering, air and alternator serpentine system. Should I use a short or long water pump type. Also my radiator will be in 6 cylinder position.
With a serpentine system I think you have to use a short pump. I think a long pump will be an issue. Definitely if the system you are considering is a front runner style. Take Many measurements once the engine is installed to make sure it will fit.
I think you'd be well off to look at any measurements that are provided on the websites of prospective suppliers. This also is dependent on the fan configuration you use and how you mount it (electric vs. mechanical). Some of the "front runner" style drives stick out a bit farther than some long water pump drives.
Sorry I missed that your post was in the big block section previously.