What is the LSA on that cam? What is the seat timing on that cam?

LSA is 110. Now's where I get my head shaking some, the seat time I don't have in my head. I'll have to look for the cam card from Comp.it was a custom grind and was in my coronet.

when the cam card is found look to see if the advertised duration is at .020" lobe lift. this is a big deal because actual seat timing with lash will be noticeably greater than the advertised number. even if real seat timing is 290-300 that cam can be tuned some with 499". the fly in the ointment is something like 260@.050". in my experience a long slow cam is easier to tune for the street than a long fast cam. large throttle bore/venturii carbs can add to the low rpm misery index but 499 cubes should soak some of that up. race/performance type single plane intakes aren't your best friend at lower rpm's. i use a multi carb set-up and drive off a pair of fairly small throttle bores which is a big help for low rpm throttle response.

I was concerned about similar problems with my 541. Dewayne helped me tweak a grind to fill the need.

I haven't fired it up yet so I can't give final results but I'm sure it'll do the trick.