I recently bought a used set of Manley springs part number 221423-16 but ended up buying some new comp 918's because they have a higher lift rating. I want $60 shipped. Got this info from searching yahoo. 16 Manley Performance Valve Springs, SB CHevy, LS1/LT1/LT4/L98 Stock diameter (1.255) Single spring w/o damper, max lift .575"

 

ttt...

 

any room to come down on these???

 

sure send me an offer

 

on ebay, 20 bucks current bid