Hot Rods Valve seals or not?

1952 Chevrolet 235 with rebuilt tag on engine.
Only the exhaust valves have seals. Shouldn't intake also have seals?
Thanks in advance.

 

Any knowledge or history of engine?
Are You sure they meant seals, not seats.
Many jobs, for budget, just get exh. seats, 'cause intakes supposedly run cooler.

 

I would think all should have seals but if you were saving money on seals I would put them on the intakes as they are the ones that suck.

 

Seals or "seats"?

 

SEALS on exhaust only.

 

I’ve taken seals off intake and exhaust both. I’ve also seen intake only with seals. But have never come across exhaust only seals.
I’ll look in my Motors manual later and see what it says for a ‘52 235.

Edit: Motors says “remove locks, springs and seals…”

this -to me- implies there should be seals on both intake and exhaust.

 

I’ve got the tool and put positive seals on every engine.. both intake and exhausts.

 

Buick never put seals on exhaust valves on their Nailheads and the later V-8. There is no negative pressure, i.e. vacuum in and exhaust port, so it can't "suck" oil down the valve stem. There is heavy vacuum in the intake ports, however, especially at idle. With some valve guides materials, it is probably better to not have them on the exhaust but with todays silicon bronze, probably ok.

 

Just a little tangentially related fun fact:

I once ran a series of dyno tests on a SBF - running with valve stem seals, and then removing all the valve stem seals and repeating the test.
The oil consumption went from 2500 mi/qt to 400 mi/qt.

 

I would venture a guess that whoever rebuilt the heads intended to put the seals on the intake valves only.
But, oops...