[Toyota350]

Hi I have a 350 that's built up. Not sure what all is done to it cause I pulled it out of a drag car that ran low 12s. Has a big roller cam and it's a 94 350 4 bolt block. It ran fine when pulled. I put it in my Toyota and ran it and then oil started coming out the dipstick tube and oil pressure would drop. Oil doesn't seem milky. But does seem to foam out. Alot of oil come out in a short period of time it does start to cut out around 4500 now too. Any ideas as to what could be wrong? I have replaced all pcv valves. And when I pull the valve out and put my hand over the hole on the valve cover and rev it there doesn't seem to be excessive pressure coming out so I'm not thinking it's the rings

[delawarebill]

u said u replace all the "pcv" valves... how many u got ??? i can't think of a reason u need more then one.. one on one side and a breather on the other cover.. air flow...

[crownver]

Sounds like you may have too much oil in the pan. The crank will be too deep in the oil and start whipping it up into a foam, then the oil pick up will start sucking up foam instead of oil and your oil pressure will drop. Don't run it like this if that's the case.

[Toyota350]

Technically I replaced the breather on the driver side and the pcv on the passenger side. And I've changed the oil ran with 4 quarts and the same thing happens. It's a stock pan so it should be 5 quarts. So I know that's not the problem