What's With This 360 ????

[QUOTE="The Cuda, post: 1971840214, . It goes in a little Red Express pick up all restored,, real nice. Damm !!!![/QUOTE]

Had this happen two times. The only thing I changed on the motors was the oil pump and pan. I flushed out the cooling system and put new freeze plugs in it. Both of them and replaced the oil pump put it back together put it down in a little red express and at idle cold had 40 to 50 lb pressure but as soon as it warmed up the lifters would all collapse. Thinking it was the engine we pulled it out when the first one did this and took a second engine that we knew had been okay out of a car change the oil pump, flushed out the cooling system put new freeze plugs in it, stuck it down in the little red express again exact same thing happened it would have 40 45 lb cold warms up all the lifters collapse the oil pressure drops to zero. Only thing we can figure is the oil pumps are bad never got either motor to carry oil pressure. P0'ed so bad the truck has been sitting in the barn for 18 years now. Both motors only change was the oil pump and pan. Someday I'll replace the motor agin.