Originally Posted By John_Kunkel
Originally Posted By dogdays
NOT All pipe threads are tapered. There is a standard for straight pipe threads, NPS. I believe the oil pickup tube is NPS.


Correct, the factory tubes and the MP replacements are straight pipe thread (measure it for yourself) but the block threads are tapered so there is enough interference fit to allow the pipe to tighten without using a jam nut.

Since a NPT combo is often known to leak, a straight/tapered combo is likely to leak also so a sealer seems prudent.

I learned something new today shock whistling

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)