It is just one spring with a damper. The machine shop put in springs with the same pressure as the ones recomended for the cam. It isn't alot of lift so I wouldn't thing it would make that much difference(If it would let me know). The machine shop that did the heads said it wouldn't need any changes for the break in.
I had wondered If I should put stock(a little weaker) spring in just to be sure.
Well I just got the engine done and back together tonight but it became to late to start and run for the break in time. I will be doing it tomarrow...thats if it starts. [-o<
All lifters when I removed them checked out to be just fine but the one.