With our multi-index cam gears you have the versatility of three cam timing settings with one camshaft. One position gives 4º advance to original cam timing and another position is 4º retarded to the original timing. Overall, an 8º timing range is available with the Hi-Roller Crane camshafts. Review products and applications. See Installation Instructions. (Instructions requires Adobe Acrobat reader. Download time will vary depending on size of file.) Hi Roller H298-2B '66-'69 Camshaft Cam Spec Card "Closeout Special" 1-0026Regular price: $181.93Sale price: $50.00 Hi Roller 298B '66-'69 Camshaft Cam Spec Card "Closeout Special" 1-0056Regular price: $181.93Sale price: $50.00 Hi Roller 310B '66-'69 Camshaft Cam Spec Card "Closeout Special" 1-0059Regular price: $181.93Sale price: $50.00 Hi Roller 304B '66-'69 Camshaft Cam Spec Card "Closeout Special" 1-0062Regular price: $181.93Sale price: $50.00 Hi Roller 320B '66-'69 Camshaft Cam Spec Card Closeout Special 1-0065Regular price: $181.93Sale price: $50.00 Hi Roller 330B '66-'69 Camshaft Cam Spec Card "Closeout Special" 1-0068Regular price: $181.93Sale price: $50.00