Mopar 400 block 8 sleeves

As this is my only problem I'm very tempted to tap oiling holes in my cam, put set screws there and call it a day... No oil pressure there, no leak...
I really am! ;-)
I was about to install my target cam in it next week.
From this cam:
Mechanical Roller Camshaft; 1959 - 1980 Chrysler 383-440 2800 to 6300 Howards Cams 722113-08 | Howards Cams
To this cam:
Mechanical Roller Camshaft; 1959 - 1980 Chrysler 383-440 3200 to 6800 Howards Cams 722323-08 | Howards Cams

I changed coolant yesterday and drove the car a lot today and found minimal residue in the coolant. Will monitor this...
What were you getting out of that first cam? That's the one I'm looking at for my '68 Barracuda, I've got a stock stroke 400, about 10:1 cr.