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stock valve springs required
Stock springs forces you to pick a road cam rather than a race cam, so I'd lean towards the Isky VV81 or the Volvo F grind too. I don't think that roller rockers would be any help to you at all because they'd make the spring's work even harder + you would have less choice of cam profiles. If it's at all possible, you should try & get something different for the exhaust lobe, it really needs to be bigger than the intake lobe, but it could have less lift. I think the F grind does have a longer duration exhaust, but I've never had one, so I can't be sure.
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