Cadillac Northstar is reliable and known for long lasting. Engines from northstar are used in many other branded cars. Northstar recently developed its technology in automobile in reducing its noise, vibration. Initially northstar engines are very harsh to maintain but now its improved. Northstar overcame its problem of going injectors bad in certain times. A 4.9 engine is very good for long ride but with less in hp when compared with northstar series. A northstar part is provided with High volume fuel pump and standard axle set for better performance. To improve further more your northstar a Twin Turbocharger System is used. Torque Restraint System is available in northstar to control torque effect. Engines from northstar are high performed engines. As a northstar dealer i can say that northstar released its new v8 vvt engines. Valve timing and steel shaft are Northstars advanced features. Along with these Northstar introduced new facility of rear-wheel drive engine.