Oil pan drain hole size

I went to Advance Auto and looked up 1987 Chevy Suburban with 454 and oil plug was 1/2-20. Pulled engine this past Saturday and that plug fit. I wanted to have the draning hose with me when I put the engine into storage so that I can measure it and get a new one. I am going to start repair on the boat soon and will start a new thread when I have time.

8122pbrainard wrote: I just went to Skidim to see if I could find a thread size. No luck but I did find and interesting notation. Their site says that on some CC's, the aft ends of the engine needs to be raised to install the oil drain hose kit. WOW, they don't go on to tell your about what this does to the alignment!! I guess they want to sell trans's after the tail end is blown out from misalignment??

Pete, its pretty common on the newer boats (and v-hulls) to have the oil pans in close proximity to the bilge. Theres no room to install that fitting unless you raise the motor up. Surely you realize that it would be ok to set the motor back down once the fitting is installed. SkiDIM is simply warning customers that the install may not be a simple plug and play.

That would be too easy!
Do you think the hole would be standard screw (bolt) threads. I will take a selection of bolts and see which fits.
Thanks

I have a queston that I could not find in a search. I have a 1987 Barefoot Nautique with BBC 454. I need to know what the oil drain hole size is. I am pulling the engine out to do some hull repair and would like to replace the oil drain hose. The outside is getting cracked and I am worried about it leaking. Also anybody know where to get a replacement? I checked Skidim and need to know size. The hose looks like it is 1/4 or 3/8 inch ID.
Thanks
Eric