how important is a windage tray?

Kenny Duttweiler was jsut interviewed by HRM, and said:

"I recently dyno’d an LS build with no windage tray just to see, and it was down 64 hp!”

He also warns against using coated parts in engines running on alcohol. “It can eat through some coatings.”

https://www.hotrod.com/articles/factors-10-top-engine-builders-tell-make-1000-hp/

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