I'm ready to fire up the beast and I have been trying to build oil pressure before I start it. I did not take the motor apart (internally) so it seems like it should build pressure since I test drove the motor in the truck before it was pulled. What do you guys think. Yes There is oil in it. When I test drove the truck it had about 40psi. I pulled off the oil filter, there was oil in it but it looked like the brand new oil that i primed the filter with, it didnt have a dirty tint to it at all, and usually when you change ur oil it will still be a little dirty from a little bit of the old oil thats left over in the engine. Thats what scares me if it truly isnt getting any pressure I dont want to start it. I am using my old 94 oil pressur gauge. I have the gray and orange wire cut, and the tan wire is the only wire thats hooked up which is going through the firewall to the gauge. Please help!