I was told they had been given a new grind. I proceeded to tear down and found the seals were cracked and not good.
So I did a valve grind and seat job on the heads. New pressed on seals w/o-ring on the stem.
I replaced the valve springs with Z28 springs(1.25 outside dia.), keepers and retainers. Good for .525 lift. Some claim .550.
Before hand I did a little port match to the intake gasket. And a small amount of blending the exhaust port below the valve seats.
The heads only have 1.94/1.55 valves. A good low rpm, higher torque head.
All that will go on a basic stock 350 I have. Re-ring, Check the bearings(rod and crank), replace if needed.
I purchased an Edelbrock intake #2701, Edelbrock #1405(600cfm)carb.
I will put in the Comps cam #12-238-2. It has a 262/270 duration w/.462-.469 lift. A good 5500 rpm range.
That will be my install into my 79 Caprice this winter. Along with a rebuilt turbo 350 w/shift kit.
Right now I have the 3.08 gears. Hoping to go either 3.55 or 3.73 posi.
Any comments as to the choices?