Nowadays, high efficient and low emission vehicle was developed due to the depletion of petroleum resources and solving the environmental pollution in the automotive industry. In addition to that, the quiet and comfortable vehicle has developed for deflecting customers concerns about NVH(noise, vibration, harshness). Shuffle mode is one of the common phenomena of the vehicle driveline NVH. Also, the vehicle shuffle can influence driveline clunk with manual transmission. The aim of this study is to reduce driveline clunk with the several influence factors. The moment of inertia of flywheel, gear ratios and characteristics of clutch disc are the key influencing parameters for driveline shuffle and clunk. In this paper, torsional vibration of driveline system has been simulated using AMESim program and experimented in a front wheel drive, manual transmission vehicle. The simulation result was compared with the test data. Based on the above simulation and test results, the optimal driveline system could be determined with robust NVH performance enablers when integrated into vehicle in early design stage of the vehicle.