Originally Posted by RamSport1996
Just wondering on what i can do to my 5.2 magnum motor for cheap i kinda have a budget which sucks
I just wanna know if there's anything i can do to the motor which will give me a difference.
The short answer NO! There is almost nothing you can do to an engine that is going to give a BIG performance increase without laying down some serious dough. Now even if you cam it and change out the intake manifold and exhaust and what not the cylinder heads themselves are very restrictive especially the intake ports because them damn pushrod guides get in the way, another issue is the ECM so you're going to have to get a MP ECM and program it, but remember if you do things like this then you have to run higher octane gas, use different spark plugs (heat range), and a cooler thermostat. But it depends on the cam of course. But if you want to increase things like MPG, HP, and thermal efficiency of the engine you can start out by removing the belt driven fan and install an electric fan, I found that with the 5.2L magnum engine you can get up to a 15% increase in efficiency due to the rotating mass of the engine. So in terms if gas is 3.65 a gallon and you drive 10,000 miles a year you will end up saving about 90 bucks a year on gas which doesn't seem like much but you will increase your MPH from 18 to 18.9 and probably free up about 5-11HP my guess but it depends, I did all the math do get these numbers. But another thing is if you use an E-Fan you also will reduce engine temperatures greatly because there would be less mechanical load on the engine because you remove about 17 lbs of weight which remember the faster it spins the heavier it is to the engine. So if there is less mechanical load on the engine that means the engine doesn't have to work as hard which means the engine temp will decrease very slightly maybe 1-3 degrees but again you would need to remove it to test it this kind of prediction cannot be made with math very easily as there are too many variables. But another benefit is if you have an E-Fan it will SUCK the air through the radiator much better then the standard viscous fan.
I am forever working on increasing both performance and efficiency of the engine but it seems no matter how I approach it there is going to be an intersect where I am sacraficing one for the other.