Valve spring pressure with solid lifters - V8-60

[Blowby]

The adjustable lifters I'm installing are quite heavy compared to the stock hollow lifters. Also using a mild cam regrind, stock lift with more duration (230 at .050).

Stock spring pressure is 30lbs. closed and 50 open. Thinking about shimming, stiffer springs not available that I know off. Street car, not expecting high rpms, I want at least as high as stock without undue cam wear. Any thoughts as to spring pressure?

 

[J Franklin]

Unless you are racing the stock springs are all you need.

 

[Blowby]

Thanks for the reply. Stock lifter weigh about 30 grams, these are about 60, just a little worried about the extra lard. A .060 shim is suggested on the larger engines, might try that.

 

[KiWinUS]

I set my 60 engines with mild cams @ 45lb on seat.
Cheers
Tony

 

[Blowby]

Thanks Tony!

Do you use stock springs? My initial measurements indicate a need for about .125" of shimming to hit 45 on the seat. Coil bind occurs a half inch later so with .260 lift I should be OK.

Sound good?