Re: Any benefits to slowing the water pump speed
One thing to watch if you choose to underdrive your pulley system is your alternator will not be spinning fast enough a idle. You will need to get the correct alternator pulley to keep around a 3-1 ratio of the crank. I ran into this will the March setup before someone told me about the correct alt pulley. I was able to get aroun 2.7 -1 and it worked fine.
69 Z/28. 302DZ, Autogear M22, Red w/black stripes.
69 Camaro, ZZ4, 700R4, 8.5 3:42 posi, X11
70 Nova SS 396, 4sp, 3:55 12 bolt