Originally Posted by civicized

The vtec lobes on usdm b16 cams are .02 mm smaller than the gsr cams, as I have measured several sets.
The claimed lift spec for gsr vtec is 10.7mm lift and si at 10.5 mm. That does not agree with my lobe measurements, so take it for what it is worth.
I have found that Gsr cams appear to have the same vtec lobe diameter as jdm b16 cams, based on my measurements.
As for duration, the published specs for 99 si b16 cams are IE 265/267 while gsr spec at IE 274/276
Those are for the intake cam. The exhaust sticks I have measured appear to be identical between gsr and b16 usdm and jdm. Published lift for exhaust is 9.6 mm
For the record, Type R civic and 98 + type R Integra cams are published at IE 278/280 and 11.5/10.5 mm