chev 305 dish piston eng.
 

need to find out what valve spring seat pressure should be.
checking mine with moroso guage was 220 was thinking they should be 180.
.357 / 390 lift. any help anybody.
thanks

Re: chev 305 dish piston eng.
 

Leon, unless you're running coated lifters and a billet camshaft I wouldn't go over 180 on seat. I've never been able to run 200 on seat without wiping out lobes, and Ive tried all the usual lifter combinations ( hole in bottom of lifters different oils and lubes)etc etc. The tool steel lifters with a nitrided cam is what I use at 180 / 360.hope this helps.

Re: chev 305 dish piston eng.
 

I would strongly recommend removing a spring, verifying the installed height, and then getting it checked with a Rimac (or similar) spring tester. The Moroso unit will vary depending on rockers, among other things. It's best used to check to see that all springs are equal.

Re: chev 305 dish piston eng.
 

190 on the seat with Smith lifters. (I use the same 305 engine combo). No problems, just check them lifter pucks regularly.