Well just got home from a day of driving. Things I have noticed. Pretty much no difference. Heater still blows just as hot. The engine seams to run better, but I also changed spark plugs from 5224, hard to tell if there is more power because the roads are still really slick.

I used a dremel to make the notch, but a small hand file would work. The notch does not really need to be perfect, just enough to clear the o-ring notch.

I have not heard anything about the 160, but 180 would be as cold as I would go on a my truck. 160 seams way to low, if the engine had a carburetor you might get away with it.

 

well just got one at napa. not sure when ill install it. thanks though.

i heard bad things about 160's in 2gens, throws to many codes.

 

what it that water pump??? what is different than stock??

 

So.....bottom line. What will this mod do? Is it another power wire or does this give some benefit?

 

with my custom tune in my 1989 gta and 2003 sliverado i installed a 160 degree so with the custom tune i can add some advance to timming without pinking and gain some hp....

 

The water pump is nothing special that I can tell, the propeller looks almost the same as stock. The reason for my change was the bearing was going.

Cooler engine to an extend is a happier engine. Every 10 degrees you drop the engine temp is good for 1HP, So nothing major

 

so it's one of these..."well, it's time to replace the coolant, so I might as well do this while I'm at it" kinda things???

 

For the most part yes. I have yet to find a High Performance water pump.

 

When I bought my waterpump from GMB they were advertising improved flow over stock. 10% is what they were saying if I remember correctly. I know with the HHR fan, 180 T-stat and GMB my coolant temps stay way low. During the winter I run my stock 200-210 T-stat.

 

Very nice Write up Eimer!