Hey guys I'm new to the forums I recently (this morning) made a login but have been reading your post a while a now. I have a 1966 with a 383stroker from a 73 camaro she's been running strong up until today around lunchtime. Decided after making a login to take the truck to lunch so I fired her up and let her warm up. Jumped in drove 5 miles down the road to my local spot and munched out in a hurry. After eating I get back in the truck and notice after she warms up my oil pressure dropped to 25psi when it's usually 45psi when warm. Two days ago I changed the plugs and switched from mobile 1 50weight to vavoline vr1 50weight and haven't moved the truck until today. No clue what I could of done to loose that much oil pressure from an oil change or plugs. If anyone has any ideas please chim in hope it's not time to pull her for a rebuild.