if your refering to the pickup truck, 2500 refers to the weight class or general payload capacity of truck, 1500 half ton, 2500, three quarter ton, 3500 one ton.
No
No.
The 2014 RAM 2500 has a V8 engine.
The 2011 RAM 2500 has a V8 engine.
The 2012 RAM 2500 has a V8 engine.
The 2011 RAM 2500 has 16 valves.
The 2013 RAM 2500 has 16 valves.
The 2012 RAM 2500 has 16 valves.
The 2014 RAM 2500 has 16 valves.
The 2013 RAM 2500 has a V8 engine.
The 2012 RAM 2500 has overhead valves (OHV).
The 2011 RAM 2500 has a 5-speed automatic.