hey people,

In my never-ending quest to find a perfect valve spring to be used with VS cam or 1.95 YT roller rockers Ive come across these:

SI VALVES


According to this graph they actually have a lower spring rate than stock L67 springs but still have a higher seat pressure needed for the increased lift. Looks like the SI VS 1118 the perfect spring for our L67 cam applications

springrate.jpg

Anyone got any experiences with this brand "SI Valves"?

Cheers