Quote:
Originally Posted by DAVID GAGNARD
Check with Edlebrock or Stewart/Warner or any other aftermarket water pump manufacter and see what they advise for pulley sizes and overdrive/underdrive %'s!!!!!!!!!!!!!!!!!!! I think you'll see the recommend minimum 15% to 25% overdriving the water pump to the crankshaft speed.....Could be your next step....
If you have an extra fan laying around, try mounting on the front and see if it helps, bet it will....
David
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Edelbrock just said their pumps are designed around OEM pulley specs. Was the 427 pulley setup a 1:1 ratio? That's about what I've got, though my water pump pulley may be a 1/4" smaller than the crank pulley. Its definitely not bigger.
I do have the 2300 cfm fan I took off when I added the 3600 cfm. I will rig it up and try it on the front tomorrow.