No sir, your 312 is a "Y" block. The FE's started in '58 and include, among others, 332, 352,390, 460 (?) etc etc.

OK,  CHANGED OIL,  used O'Reillys full syn 20 weight,  seems quieter but did gain some oil presssure,  10lbs,  that make any sence?

ok,  I've said before,  don't know very much,  whats a FE mtr,    my 312 57 ford,  I've got a 2 bdl intake laying  around, cST IRON, is that any good?

An intake for a FE motor of the 2bbl variety. My machine shop guy has a client who is on the hunt for one.
Thanks!  Hugh

Keep asking those questions! I've been into these old Fords about as long as you, and I'm always finding out I don't know as much as I thought I did.

good question,   I don't  know why I used a heavy oil either,  when I bought it I thought maybe it was a old restoration  an a loose eng,  who knows,  any way,  I'm  changing oil anyway.         thanks to all for info,  I've been into old cars for 35 yrs,  an  still don't know very much,  thats  why most of my  questions might seem  stupied,  don't ask   you don't learn

Thanks, David, I ended up having to cancel my Carlisle trip, due to bad back and leg pain the day before we were supposed to leave. Hopefully my health improves for either a later swap meet later in the year, or next spring. A Carlisle (or Hershey) swap is still on the bucket list.

I have to assume that you mean the coolant holes in the front of the heads, right? If so, yes they should both be open, at the rear passages, the passenger side will have a core plug, and the drivers side has the temp. gage sender, but both fronts should be open.

If it is a Y block V8, or 223 6 cylinder, they have solid lifters, and oil viscosity should have no bearing on lifter noise. Curious why you are using such a heavy oil? On my warmed over 428 CJ in my59 2 door, with a solid flat tappet cam, I am using 10-30 Brad Penn high ZDDP oil, and even on my drag race cars, using various 427 and 428 FE engines, and SB based stroker race engines, all with solid flat tappet cams, I also normally use 10-30 Brad Penn oil. Unless you are trying to nurse some extra miles from a worn out old engine, with worm bearings, 20-50 seems awfully heavy. Concerning the valve train noise, first thing that I would check is the valve lash. I have always found little to zero change in valve lash, on an engine with iron block and heads, with steel pushrods and cast iron rocker arms. To be honest, I would think that the much thicker aluminum valve covers should tend to reduce valve train noise , not amplify it.

it has a 3/4 cam,  an solid lifters make noise any way,  I also just installed aluminum valve covers which could be the  reason for more noise,  I'm going  to change the oil weight any way just to see what happens if any thing,   thankls for the info,  every thing helps