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Signman · 09-06-2021, 10:17 AM

Did a lot of work with oil control and oil pumps on SBC.
Although did not back to back oil pumps (it's a PIA) did do so with filters making back to back runs on the dyno.
Replacing WIX racing filter with screen type filter lowered oil pressure gained 3-4 HP. Even though the paper filter "average" opening is 65 microns a 30 micron medical grade stainless steel screen released power.
Low load low drag oil pump screened filter effective windage control and what ever crankcase vacuum you can build legally will release power.

09-06-2021, 10:17 AM	#5
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: HP Did a lot of work with oil control and oil pumps on SBC. Although did not back to back oil pumps (it's a PIA) did do so with filters making back to back runs on the dyno. Replacing WIX racing filter with screen type filter lowered oil pressure gained 3-4 HP. Even though the paper filter "average" opening is 65 microns a 30 micron medical grade stainless steel screen released power. Low load low drag oil pump screened filter effective windage control and what ever crankcase vacuum you can build legally will release power. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"