ok so I've done alot of searching but can't find the answer i'm looking for. My friend and I can't figure out what the difference is between vtec and non-vtec valve springs are. could one put vtec (b-series) springs into a non-vtec(b-series) engine? why or why not? I know the vtec engine revs higher then non-vtec and theres more stress on the head, could one put vtec aftermarket springs into a non-vtec engine to aid on the stress at running at higher rpms/ help from throwing a valve or timming belt? I know how to put engines together and get them running but when it comes to the tech parts I don't get it all the time.