Frankb
Well-Known Member
I had a hell of a time removing old pickup from 440. Finally got it out yesterday and went to install new pickup from 440 source (part # 121-1056). Now the issue is I don't think the the threads on new pickup are NPT. They are are different from the pickup that came out of the engine. A Milodon pickup was removed from the engine. When I installed the new pickup it screwed into the block just fine but there were not enough threads on it to position it properly. It needed an additional 1/2 a turn. So I bought a 1/2 inch NPT die and I figured to add a thread or two so as to get pickup properly positioned. Die did not fit properly. That's when I looked closer and saw the threads on new pickup are different than old pickup. So what is the right thing to do to remedy this? Why would a straight thread pickup screw into an NPT hole? I see two possibilities: cut the new pickup to NPT (can that even be done) or order a different pickup with NPT threads. The old pickup that came out of engine is top in pic. Block was modified to accept 1/2 inch pickup.