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So not a good idea for a street duty car then?

Thats exactly right on tight clearance scrapers. Pit road and parking lot crusers, street and strip cars need more clearance for oiling the pistons,pins,cam lobes at long low rpm run time.



?????

how does a scraper(located on the lower part of the engine) ... negatively affect the oiling at the TOP of the rotating assembly?



The theory is it removes oil from the air slinging around with the crank, this oily air is what also lubricates the cylinder walls and rod small end because there is no preasurized lube up there. It would take a lot of research dollars to determine how much oil has to remain and how much you can remove. Aparently the factory thought windage trays were usefull in both big and small block engine.

BTW I have a miloden windage try similar to the factory SB one except it has twice as many louvers and is a little thicker.



I am not suggesting getting rid of ALL the oil coming off the main and rod areas of the crank ... just on the lower areas.

And as far as the oil coming off the heads, cam and lifters ? ..... I seem to remember a shop doing a test of plumbling all that oil directly with baffles, hoses and a tray ....and the HP savings was worth that effort.