I run the stock oil pump and I'm pushing nearly 600 rwhp. Not sure on the need to swap harmonic balancers.
+1... I could have purchased a forged and balanced short block for what I paid for the new guts and labor to tear mine open.In this day and age it’s completely insane to put your own shortblock together when taking into account how inexpensive it is to just order one up. The price difference between the parts and machining and a built shortblock is so small it’s not worth the time, effort, aggravation, potential problems, need for specialty tools, etc. I can build motors in my sleep and there is no way I would put my own shortblock together. I am much better off spending that time doing what I do for a living and getting paid for it.
New and used parts!:happyhapp Pay now or pay later there is no such thing as a budget build. $.02Some are used, some are new, but that's why they call it a budget build.
New parts fail too, but used is such a dirty word. I should have said, "certified pre-owned". :gringreenNew and used parts!:happyhapp Pay now or pay later there is no such thing as a budget build. $.02