Use anything that works for me????? The one on the car points toward the radiator, I am looking for one that points straight up, ah, you know where upper radiator hose attaches. All water outlets (AKA) thermostat housing are not the same ID nor OD nor the same bolt Bolt pattern; there are many different size thermostats as well. So it is as simple as "what ever works for you" Unless you have an illustration of different SBC water outlets.
Thanks
A BBC of 1998 has a straight up version.
It's 1-11/16" diameter at the rib part I believe and 1-1/2" at the smooth part.
BBC and SBC both have the same hole pattern.
Sorry, thought you were looking for opinion, not specific dimensions.
I will verify when I get home later.
Do you have dimensions for your angled one for comparison?
Not that it would matter size wise. I've warmed up undersized hoses to slip them on in the past with no cooling issues.