The_Red
Guest
In the 4400 series, they started in 1970. I don't know if the gas option was available until the 4420s were introduced or not. The carburetor and manifold are probably different than the truck version. My engine on the 4400 has a Bendix Zenith one barrel carburetor. When I get home this evening, I'll look up a gent's name in Arkansas that has extensive knowledge of the GM 292 6 banger and get his name to you.