.471 intake .463 exhaust intake 11.96 mm exhaust 11.76 mm i measured using a micrometer so these are rough, i was pretty accurate in getting the mic on in the 'middle' of the lobe to so speak. the intake cam has a '2' and an 'x' stamped on it. the exhaust cam only has a 'x' stamped on it. nothing on the cams near the dizzy. i thought they were s2s2 but they dont look like it. here r the pix the light bouncing off the cam gives the lobe on the right a 'scratched' appearance but its really not..