Loose
Many engine builders build High Performance engines "loose", tolerances.
Example, my side-oiler was built loose from SAA, if you run around at 50-65 MPH in a cruise at 3,500 RPM and lower it will use oil, you will not see it smoke out the sidepipes. Like on the Unique Cruise in Gadsden, 150 miles or so, 1/2 qt of oil. Now if I run it 60 MPH and up, over 3,500 RPM and higer, another words in the performance "Mode", it wont use a drop of oil. It has to get hot and turning some RPM for the clearances to tighten up. So at 50% of it's potential it is loose, at 75% - 100% of it potential it is tighter and happy.
A high performance 427 side-oiler will cost $25 - $30,000 easily to build.
Rick
427 S/C , 427 Side-oiler, 4 Speed Close Ratio Top Loader, 3:73 Gear
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