Fuel Efficient Engine Builders?

[Davo53209]

If you were to read any hotrod magazine, what you would usually find were ways to modify either a big block or a small block engine, so that you could maximize the hourse power needed to burn down the quarter mile in the shortest time.

During the hotrod era's earliest developments, there were a lot of backyard mechanics(i.e. similar to us FE fanatics), who were tickering with stock autombiles, intent on getting the most speed and performance out of their engines. In time, the techniques towards engine building needed to achieve that end, evolved from the backyard into speed performance shops.

My question to this forum, is to ask whether or not there's any shops, builder, garages, etc, who are dedicated to the building of engines, for the sole purpose of high fuel efficency? The parallel that I see, is like to early hotrod builders, the members of this forum are trying just as hard to get the maximum performance out of our vehicles, but in the opposite direction. What we want is tweaked out fuel efficiency. Rather than buring down the quarter mile, I rather burn fuel at a rate of over 50+ without paying over $20,000 for some ridiculous hybid.

If it doesn't exist, then frankly if I had the skills, then that's just what I would do. Thank You.