yes
If its the standard height, nothing. If they are screw in studs with tall nuts, then you will need tall valve covers.
No.
Chevy 350 small block engines with hydralic lifters set at 0 lash. That means start the engine and adjust the valve until it just quits clicking. Then tighten the nut approx 3/4-1 turn then set the next one.
It has 8 intakes and 8 exhaust if it's a V-8 engine.
1.6 ratio rockers were only offered in the aftermarket.
I ground roller cams for Erson, that were up to .650 lift.
no such thing as a pontiac small blockstock they rockers were 1.5 ratio
.017, or, a matchbook cover, works great.
NO. The 86 is not a roller block.
Oil level low, low oil pressure, or a clogged filter, if the bypass is not working. From there I would say maybe a clogged oil journal.
Could be, Out of adjustment Worn camshaft Worn lifters Worn pushrods Worn rockers All of the above.