Quote Originally Posted by Dave Severson
About 6 psi and 100 -120 gph should be more then sufficient for a mild engine, unless you are going to do some serious racing. The lower priced Holley electric pump is a good one, not terribly noisy if it is mounted with rubber shocks. An inline regulator is nice, with a gauge it allows you to dial in your pressure. Probably not required for this application.
The Holley runs very nicely, as I have used them often - and you don't need a regulator unless you like the look. Summit's current price is about $96 + $10 for shipping. I had planned on using one but decided that a standard mechanical pump was better for my application. Unfortunately on Ford 5.0L crate motors you do have to change a lot of parts to use a mechanical pump - so I have a brand new Holley pump as a surplus part .