I bought my first 440 "race" engine from a guy running Super Gas with it at 145 plus. Ported iron heads, stock block, stroke, etc. My Challenger was a bit (4-500pds.???) heavier than his Daytona and I ran a smaller cam but would run 10.0's at 135-137. I still have the oil pump and hand grinded upon Harland Sharp roller rockers from it. Sold the epoxied, cracked, etc. cyl. heads. This thankfully happened on the starting line after a .001 light...