are these S3 cams??????

[SRpetey]

I bought some used S3 cams a while back. How do i make sure these are the real deal. How do you measure cam lift. The lobes are are ~38.14mm

[SRpetey]

can anybody help??? or how do measure cam lift? and what's the rocker arm ratio?

[OutToWinPAHC]

a micrometer

[clark]

Let me google that for you (http://lmgtfy.com/?q=how+to+measure+cam+lift)

[smelly240]

lol - with a micrometer - riiiiiiigght.

mr dragster transmission v8 guy is kidding.

[SRpetey]

okey and is the rocker arm ratio 1.53 for a s13 sr20det redtop?