340 oil pressure? Help

krazykuda said
I had a similar issue on my first rebuild... It turned out that the machine shop did not put the oil galley plugs in the front of the lifter galleys... Pull the timing chain cover off and then remove the camshaft thrust plate and make sure that there are two plugs behind the plate...

Read this article to see which ones exactly:

How to Assemble the Front of a Small Block
Click to expand...

Double Ditto, on this! Happens a lot when Cheby and Ferd rebuilders do a Mopar! The camshaft thrust plate blocks the holes but not very well, so low oil pressure is often the result. This is definitely not easy to check, so give the heavier oil a shot first. I wouldn't be happy with that oil pressure on a new build either....