Sorry for my total ignorance of all things GM.
I spent some time looking up what I could on the web.
Found these pictures:
Found this warning/comment:
“…I heard the pump failures were all in 2000 and older model years.”
Generally found the price to range between US$150 and US$200 for “ported and blueprinted” pumps, but also found this AU$595
Hi Volume version:
http://www.capa.com.au/prices_ls1.htm
So far, nothing I’ve read is putting me off the idea too much.
What I haven’t found is actual data:
1) How much does an LS1 pump pump? Does an LS6 pump pump more?
2) At what pressure?
3) What is considered “Hi Volume”?
4) Granted there seems to be a history of problems with the stock pumps, what were the problems and what (if anything) was determined to cause them?
I’ve considered an external pump, but I have a (perhaps) unreasonable fear of belts driving critical engine components. Just me. Also, less stuff hanging off the engine looks better to me. I’m willing to reconsider. Do you have any links or pictures to what you consider good external pump systems?
Thanks for any help. Would appreciate any leads to other sites where I could find additional information.