Volvo 8v upgraded Valve spring set

Kit includes 8 beehive springs, 8 Yoshifab hardened tool steel valve spring retainers, and 8 modified lower spring seats.

Stock springs I have measured very in seat pressure from 40 to 60 lbs. This setup has a 100lb seat pressure and will do .500 lift. The steel retainers weigh 8.7g while the stock ones are 22.6g.