226 valve springs

so on the budgit build engine i will have to have a cylinder head done so i found an old post about using big block chevy valves 192 intake 160 exausht  ,  this is with the 175 cam grind , what valve springs are needed and what spring preasure ,?   will i ba able to use the stock rockers ? 

What RPM max ???

on my WD @ 13.7:1 and 2100 to 2300 rpm stock everything runs like a champ and usually spins out very rare for a power out.

Stock springs new are 37 to 43 lbs at 1.812" compressed height. I assume this is close to assembled height with new parts. Compressed down to 1.438" the pressure is 65 to 75 lbs.  I ran stiffer springs years ago when I ran open RPM's (probably 3500) and kept hammering the cam drive gear off of the camshaft. I settled in on some springs from a 2.2L Chrysler engine of some sort and I think my seat pressure is in that 40 to 45 lb range. Remember the camshaft is HOLLOW and really high spring rates are not needed anyway with RPM's under 2500.  I use stock rocker arms and push rods.

Edited by DrAllis - 31 Mar 2023 at 3:33pm

Oiling is an external line from the oil filter base. Same on all heads and engines. As far as port/polish, I shorten the intake guides on the bottom and reshape a little bit around the valve guide area. With big valves the head will require more blending up smooth to the new seat area. Never messed with an old head. Always used a tall head because the spark plug is more centered.