I looked at the Solas impellers and they sure are "pretty".....But I wonder if it's worth it.
I know I've posted this same idea a couple times, but just like you stated yourself, you can't have your cake and eat it too.
If you change your impeller to less pitch, you'll jump out of the hole. And if you really reduce it, you may actually lead out of the water. But the more you decrease the pitch, the less your gonna make at top end. On the other hand, if you increase the pitch, just slightly, you may get a couple extra mph. In the engineering aspect anyway. But I can't see it making a big enough difference that you'd actually notice.
I remember one time when I was a teenager, I had a 1968 camaro (I still have a pix, I should post it) with a 350 cu.in. motor in it. This older guy down the street had a Mustang with a 351 Cleveland in it. But it was pumped up a little. Headers, carbs, a little cam....you know, just the stuff to make it sound really good. Well, he wanted to race on the weekend. I thought the only reason he wanted to race was because he knew my 350 was stock. I accepted the race because I had an idea brewing in my little pea brain. At home, my next door neighbor had an old Suburban linemans truck that didn't run anymore. It was sitting out in the back 40 with weeds growing around it. But I remember when it ran, it had granny gears in it. I asked him if I could have some parts off it, he said take what I wanted. I jacked it up and pulled the 4:11 rear chunk out of it and on Friday afternoon, I pulled my 3:73 stock gear chunk out and put that 4:11 chunk in. Then I went to shipyard road around dark to hang out with everyone else. Mike showed up a while later and it wasn't long till he wanted to race. Our track was between an 1/8 and 1/4, usually the school cutie on the end, to drop the flag. Long story short, I beat him that night with a stock engine.
The reason I brought this up was because sometime, to make something faster, you don't necessarily have to break the bank to do it. That was a true story and I was 18 years old. That pretty much started my toying around with making high performance engines. The engine is only as good as the drive train you hook it up to.
Man, did I get off on a tangent or what...........:ack: