Ty, check the exhaust side also, if the cam is ground on a 108 LSA the exhaust should be retarded toe same amount as the intake is advanced,IE intake in at 105.5 then the exhaust should be in at 111.5. All motors start the intake stroke at the beginning of the number one cylinder rotation, IE the piston starts down on the intake stroke as the exhaust valve closes 4 strokes, intake, compression, power and then exhaust