Fuel pump rod plug, question?

[Lineman]

I am almost positive this is the correct plug, 3/8NPT, but it's only screwing in about two or three threads? It's a 1968 440. Is this common?

Thanks

 

[turbine68rt]

Are the male/female threads clean and in good condition?

 

[Lineman]

The plug is new, I may have a tap for that but female pipe tap is something to be careful with probably.. maybe I can look for a tap and chase it a little?

 

[33 IMP]

I'd clean the pipe plug on a wire wheel, and the threads in the block with a wire toothbrush.
Then teflon tape it and fly it.

 

[R413]

Someone has grit all over that area. Clean the threads. You can use brake cleaner and a toothbrush.

 

[493 Mike]

A new plug is most likely Chinese.
Mike

 

[lewtot184]

Clean the threads up in the block with a tap. Don't try and get the threads deeper. The plug doesn't have to sit flush. It's just there to plug the hole. You can use Teflon tape or paste; either is good.