I really appreciate your input, I still might rebuild the carb. I will have to contact Holly direct to see what they recommend, the 80508 is an older model I believe and is 750 cfm. I will see what the say on the Quick fuel parts. Thank
There's no reason why that carb shouldn't work well on a 360. That 80508 is a 750 vacuum secondary 4160 (primary metering block w/ secondary metering plate). Are the primary metering block and secondary metering plate the ones that go with the main body?
I would just clean it out really good and put everything back to stock (pri. jets-72, PV- 6.5, secondary spring- plain, squirter- .025 etc.) and start over. There's no reason why your quick fuel bowls should leak. People swap bowls from different manufacturers all the time. Just buy a couple new bowl gaskets and make sure the bowl screw gaskets are good too. Check float adjustment gaskets as well. Hell, just pick up a Holley rebuild kit- $29: Holley Performance 37-754 Renew Carburetor Rebuild Kit
Clean it up, put it back together with good gaskets and fire it up. While you have it off, square up the transfer slots too. That's a decent carb.
