I`m rebuilding the 2056 and wondern` about the advantages of this modification?Are there any negatives?

Benefits? cooler oil temps.

For a street engine remove the vanes like I said.

For a race engine remove the vanes and Drill a bunch of 1" holes in the flat areas so no oil puddles on the tray.

Under high rpms the type 4 engine fills the valve covers halfway with oil as it just doesnt return fast enough thru the pushrod tubes/thru the tray.

Thanks Geoff. I only ran that mps I got from you about 300 miles before I spun a rear main(don`t ask how)I will be rebuilding it right this time.I`m just looking at all the mods to make it last this time. thanks again!