What's a good on-seat valve spring pressure with stock springs?

I have a set of heads in my garage, that came off a 390 I got from a friend. They've had the seats done, stainless exhaust valves, and looks like all new springs and retainers.

I found 90lbs on seat, or possibly near 100, using a bathroom scale.

Is this right?

(I have no idea what the stock springs are like, the heads I built for my highboy are double valve springs and with my 210 lbs, I can't get them off the seat )

 

my slitly over stock .6" max springs were 120lbs at 1.82" the book called for under 90 - 114 as I recall

 

These things are sitting at almost exactly 1.850

So, I'd assume 90-100 is OK for stockers.

None of them are shimmed, all the stem heights are the same, whoever redid the heads got everything perfect. It's a shame they've been sitting around for 15-20 years.

 

for stock, 90lbs at 1.830. Krewat, those springs are fine!

 

You will be fine with 90 to 100lbs of seat pressure. RUNNER LOL