Im betting your right..My friend just had a similar problem he redid the top end of his older early hemi(something like a 321 hemi or some such) and he accidentaly blocked off something that starved the top end I think he replaced some stuff and ended up ok overall... I had a scare also. the oil pressure gauge line runs from the after market gage into the engine bay and to a nipple on the back of the engine..that actually broke and sprayed almost all the engine oil into the engine bay...I got lucky there was no fire probably and that it didnt damage anything(ended up going to braided line and added 4+ quarts of oil...but seems to run fine still so im assuming no permanent damage...I think if you pretty much caught it as it happened and shut it right down you will be ok.