That's a Delta cam grind. They call it their RV cam, as it pulls like a train uphill.
I got it in my 261 and it's my favorite grind for the street and highways with 3.55 rear and no overdrive.
Delta recommends .012 for both intake and exhaust for initial break in.
After that you can adjust the exhaust to .014 (or looser for heavy loads) and the intake as tight as .008 or even .006 like Chevy did, since the intake valves are so far from the spark plugs and don't heat up as much as the exhaust valves.
A bit much cam for an unmodified stock 235, but gets great performance with dual carbs, headers, milled 848 head, bored cylinders and a hotter spark.
An excellent grind giving plenty of bottom end torque holding steady up to 2500-3000 rpm.
HP curve peaks around 4000-4500 rpm.
