#7 Sucks
a lot of people want the "magical goal of 500 rwhp Naturally Aspirated in a stock cubic inch ls1"
and have no idea that it is fairly simple to get there, but you have to spend some coin in a few spots that most people dont even want to think about...especially when a lot of peoples cars are their daily driver...
notice, I didnt say it was cheap to get to 500 RWHP...
serious high dollar porting and canted valve jobs
sheet metal intakes
Crankcase Vacuum pumps
Conversion to Dry Sump
Gas ported Pistons
a really good crank Damper(not just a stock balancer or an underdrive pulley)
these are just some of the simple things...

people go to the water pump because its a place where they can return to fairly easily.
but it does you no good if you dont have a steam trap spot up at a higher location..
kurt urban sells a whole kit with a little box that you mount up above the engine..its made to trap the steam at a higher point, then you can return to anywhere
if you dont go to a higher point, then you should go to the radiator return that normally exists from that vent line as it allows the steam to go to the highest point, which then also makes it so you can burp out any air bubbles easily
when you go to the Water Pump without going up to a higher place first...all you do is trap air/steam in the water pump...which can cause cavitation, which leads to slower flow and more bubbles with poor cooling properties...
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