seawolf06

For the oil pressure sending unit behind the intake. I think it's 1/4" NPT (what does that mean btw?) since that's what thunder sells with their guages, but wanted to see if anyone here knew for sure. I'm trying to hook up a mechanical guage to check the sending unit's accuracy. Thanks.

2nd_chances

NPT is National Pipe Thread. The english standard for pipe threads.

Dave89IROC

and the hole behind the intake is 1/8" NPT

seawolf06

Thanks Dave , can anyone else confirm? Anyone know what the one on the oil pan is, just for extra info?

KPZ-28

some places also call them national pipe taper (npt) threads

shoebox

Sounds right to me.

seawolf06

Thanks shoebox, I was hoping you'd chime in.

shoebox

Dave knows his stuff.