Been looking into running a 4 barrel for my 235 as I have a nice Clifford intake, looks like the Holley 390 cfm is what I'll be running. That said, a friend went with this carb on a 300 ci inline Ford and found it was to small, moving on to 500 cfm I believe.
Ran the 390 cfm on my old 194 Nova and WOW, what a performer
Best of luck.
Also may want to check out this site for 292 performance info, interesting stuff.
http://www.12bolt.com/
