460 Novice

I recently inherited a "built" 460 with new Edelbrok aluminum heads and roller rockers and timing. I don't know much else about the rebuild, but it had sat for a few years and had never been started. I took a chance and put it in my 65 F-250 bolted to a C-6 with dual flowmasters. After some difficulty with the wiring, I turned it over and it started right up, pegged the oil pressure gauge and then gushed oil from around the filter. I replaced the Motorcraft filter with a better Wix Gold filter and it started right up again and blew out that filter immediately. since most of the 20-50 oil was now on the garage floor I thought a lighter grade would be better so I filled it with 10-30 and yet another filter and...the same result, oil gushing out the blown seal on the filter. Obviously there is way too much oil pressure. For the short time this 460 has run, it was smooth and it sounded great. I don't know what else to do and would appreciate any advice on how to fix this problem...thanks!

Welcome to the site......It sounds too simple but make darn sure the old filter gasket is not still on the engine before screwin the the new filter on...

x2 on what Dave said if the old gasgket was not on it the check valve in the oil pump might be stuck building to much pressure.I would not fire it back up us a drill to turn the oil pump with a manual guage and see what the pressure does.Sound to me the oil pump is the problem

Welcome to the site

OK...there were no old oil filter gaskets. I will do the oil pump test...another friend said to do the drill test with a valve cover off so as to see if oil is getting up top and the galleys are clear. I will do this as well. Is there any way to fix the check valve (or un-stick it)? Perhaps spinning the pump in reverse? Is that even possible? Otherwise I will have to pull the 460 out to drop the pan and of course, I just put the truck all back together! Thanks again for any help...