drill holes in lifter trays or not?
#1
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i am rebuilding a 98 ls1. in reading several books about this one of them says to drill half inch holes in the lifter trays for better oil drain. is this a good idea and if it is where should they be drilled? thanks for your help.
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#14
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As noted, LS2 tray; although, if road course driving or sustained high rpm driving a lot, drill the trays, 3/8" on the low side or side nearest you when standing next to either side of the engine. Drill just above the strengthening ribs, (2) holes per tray. What this does, is to allow oil to drain back to the pan sooner than it would having filled the whole tray before over flowing. Dry sumps aren't always effective for road course driving. Even vettes running dry sumps have had oil starvation engine failures.
I run my LS1's w/ drilled lifter trays, oil pans (wet sumps) & pre-oilers on road courses while sustaining 1.8-2.1g long sweeping turns.
I run my LS1's w/ drilled lifter trays, oil pans (wet sumps) & pre-oilers on road courses while sustaining 1.8-2.1g long sweeping turns.