I don’t like that cam in small blocks- I ran a 318 Duster years ago with similar enough components gears and converter to make it comparable and went low 8’s with a 268/272 .450/.455 mp cam. 7.20’s with a 312/.590, victor 340, very loose Fairbanks 8” converter and 4.88’s. The same car went 6.80-6.90 with a 340 short block with the same cam/heads/intake and some Arias pistons from the 70’s
