Hyraulic valve lifters are leaking down and slow to pump up; restricted > oil
> passageways (sludge) may be at fault.
>
> The worst in history was the 1950-1952 Chevrolet powerglide engines. Low
> pressure-feed (15psi) oil was introduced at the rear of the engine block > at
> lifter #12 and made it way serial-wise around each lifter to #1 at the
> front, if it ever made it that far.
Fool....no such thing as a "powerglide engine".