Read my post #11 again and research the flat tappet alternatives.
Once of the best choices for a high quality flat tappet cam for your BBC.
ISKY Racing Cams - Do It Right. Race with the Legend. Camshafts, Connecting Rods, Valve Springs, Lifters
I have never seen a Isky flat tappet cam fail or wear out. solid or Hyd BBC or SBC ---Ever.
Their solid flat tappet BBC street cams rock.
Call 'em for cam choice help. Do no just shop the Isky catalog. call them.
something like their intake lobe # S-550 combined with exhaust lobe S-385 on a 110LSA, in on a 104 to 106 In C/L will rock.
278-288 244--254@.050 .595-.595" lift .016 .018 lash.
Now you're cooking with gas!