What's this hole for?

[elcaminokyle]

I've got a sbc 327 of a mid-sixties vintage and it has the road draft hole in the back of the block topside. But it also has a threaded hole next to it also in the block. The threaded one is the one I'm asking about. I see where the distr. goes into the intake and the distr. clamp bolt, also on the intake. I'm curious what it goes to and it seems to be a few inches deep if that helps.

[J. Robinson]

Without a picture, it sounds like you are describing the hole for the oil pressure fitting.

[Ed Rodder]

Without a picture, it sounds like you are describing the hole for the oil pressure fitting.

that what it is.

[Racecar100]

That for the Oil Pressure gauge

[chevydrivin]

Need a picture............................................................................................. ........................................................................................