there is a small 1/4 in. hole to the side of where the old draft tube used to be on my 327 chevy. Can i install my oil pressure sending unit there? If I run a pcv valve breather does it matter what side of a 600 cfm holly double pumper i attach a vaccum line to? Thanks for the first reply. I am starting 0n getting my hot rod running again.
Yes you can install your oil pressure sender in that rear hole if it suits your application. The pcv hose needs to be connected to the base plate of your Holley, front or rear, whichever is best. Make sure you have a breather on the opposite valve cover so the air can circulate through your crankcase and up to your pcv.
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