GSC Power-Division Full Billet Honda B-series Vtec T1 Camshafts are designed for Turbo Street/Race Cars looking for improvements in power for the mid-range to top-end.
These cams are designed for engines with a turbo. They aren't designed to be used with an NA engine do to the lobe profile and timing events.
Billet Core High lobe (IN/EX) 288/276 Duration 260/254@1mm Duration 12mm/11.5mm Peak valve lift 109/115 Center line
Adding valve spring upgrades and even their Ti retainer option are necessary accompanying mod with the T1 camshaft set install.