Has anyone heard of Stewart Water Pumps (www.waterpumps.com) Pros & Cons

 

I bought one a few weeks ago, it's sitting in my closet for when I've got time to put it on. They are supposed to flow 40% more, which will be nice. I've heard good things, otherwise I wouldn't have bought it. I'll post after I put it on, that should be next week sometime.

 

Here's a picture of the Stewart Stage 1 cast iron water pump. It uses high quality sealed shaft bearings and I heard Nascar engines use Stewart water pumps.

 

What's the difference (besides price) between Stage I and Stage II?

 

I have the stage one in my car with a stock radiator ang a derale tornado fan. I went to the track last weekend for the first time, car wasnt even on street yet, and it never got over 190 deg all day. Its an aluminum headed 355 btw

 

The Stage II is Aluminum.

 

Is there any advantage to the Stage II besides weight? And approx what is the weight savings?

 

it looks cool..

 

I looked at the site and although they say "high flow" they don't say how much of an improvement over the stock pump. The only reason I am curious is because I just put a pump on my 98 blazer. I used an OE and since all GM replacements are now new unit's there was no core return. I took a look at the old unit's impeller and I just can't see how modifying it can develop a flow 40% greater without enlarging the input and output lines. I am almost tempted to buy one and run a calibrated flow test, anybody ever compare them? Doubting Dan

 

i just put in a stage two water pump in my 91 rs. i would highly recommend it to anyone.. the differences between stage 1 or two other then weight and wont matter unless you really going to do alot. the reason a got stage to is im going to do a head and cam swap soon and leady have a 2400 rpm stall and 323 posi rear end so i can revs alot higher.