Quote:
Originally Posted by Daox
3hp would be 5.4%! 
As oilpan noted though, his pumps pull less than 100W, so only a fraction of a horsepower. |
But those are electric pumps at constant speed!
For a big V8 the mechanical pump pulls a few hp at high rpm for sure, I extrapolated cruising/idle consumption numbers for the same pump to be in the low hundreds of watts depending on speed of course.
So I think you'll definitely pick up like 1-2hp at the top end, maybe more, and at low speed conditions it'll be like removing a large chunk of your electrical load.