Just joined , but I have been browseing along for a few months. I have a 302 GMC I just put in place of a tired old 228 in a 1950 GMC pickup. My question is the 228 had a "t" fitting on the front of the block, one went to the front of the head (valvetrain feed) , the other to the pressure gauge. I saw in a "stovebolt" post on tech tips ,a note that said , this engine needed an oil filter and if the supply line on the drivers side is blocked off there will be no oil pressure to the engine.Currently the "T" goes one branch up to the valvetrain and one to the pressure gauge.There is a small plug in the drivers side of the block down low just behind the gas pedal/throtle linkage mount on the block. I did prime it before dropping in the Dizzy and had pressure up into the valvetrain. I have not started or ran it yet, still fitting the intake/carb , headers on. Any help our a steer in the right direction would be great. Thanks !