I used to have a sputtering issue with my 292 and it ended up being a vacuum leak in the carb...would idle fine, but when you'd hammer on it, it would sputter and sometimes die.


1964 C20 LWB 292 6 cyl/sm420 parts truck.
1966 C10 SWB 292 hotrod 6/TKO600 tremec 5 speed.
1964 GMC 1500 LWB 305E V6/ SM420 "Crustine"
1977 C20 LWB 496/turbo400(soon to be 572)
My youtube channel: https://www.youtube.com/channel/UC_hdwhPFzfzpcUXyK_5-uiw