I’m planning to order a set of valve springs for my 97 SSEi in about 2 weeks. I was planning to get a set of 105s but noticed that the set of 130s is only $10 more. If I used the 130s will I need to change anything else like timing chain? I’m going to install 1.9:1 roller rockers and oil restricted pushrods at the same time. What advantages will the 130s give me over the 105s? Is there a down side?

Stick with the 105# springs. 130# springs are overkill for your mods, require a double timing chain, and would put unneeded stress on your valvetrain.

Your stock springs are 70-ish. 105 is MORE than ample.

There have also been some cases of stock valves snapping with 130# springs..

Have you considered the 90lb LS6 springs?

Those dont fit properly in my engine.

I'll stick with the 105s. Just thought I would ask seeing there was such a small price difference. Thanks all.