Gear drive. .543\" intake, .543\" exhaust valve lift. Camshafts come without inner & outer drive gears. Bolt-in for 95/96/103/110\" with stock pushrods and lifters etc. The \'Freeway Flyer\', smooth cam lobes. More power than stock with air cleaner and exhaust mods. Easy starting. 99-04 TC 88/95 require high lift valve springs. 1900-6000 RPM. Note: Gears must be purchased separately. Installation is a simple press-on installation. If you have gears from your current, Andrews or S gear drive cam, these can be re-used or a new S set (531264) purchased. Note: Block-off plates 566113 are sold separately. These are required to block-off oil holes for hydraulic chain tensioners when gear driven cams are installed.