[DeTomaso] strength of stock valve springs and ZDDP required

[Pantdino]

Anyone know what the strength of a stock Pantera valve spring is?

here's a link to a Bob is the Oil Guy thread that was the most informative of the ones I have seen.  It gives some info on what ZDDP ppm you need for different spring rates:  


http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1050251&Searchpage=1&Main=81269&Words=David_Navone&Search=true#Post1050251

Jim Oddie