need a holley 847 carb 1 bbl for a 1950 6cyl flathead , old one leaks after engine is turned off.

 

Cowboy John is a forum favorite for rebuilds - he may be able to rebuild yours or provide a core/rebuild for you.

However you source a carburetor, be sure you get a 7HT variant so all your linkages and mounts and whatnot are correct for your truck. All 7HT carburetors will be marked 7HA, but not all carburetors marked 7HA will be 7HT carburetors. One will have to look at the air horn mount and linkages to verify it is a 7HT and not a 7HA.

More information on the 847 is here, including variants:

https://www.oldcarmanualproject.com/...H847/index.htm

 

If you decide to rebuild it yourself, get a good quality kit from Daytona carbs. With a leak, you might need a float adjustment, a new float needle and seat, or a warped lid due to improper tightening. The bowl screws only need a few inch lbs of torque. I use a screwdriver with a torque setting to avoid really going after it.

JB