4.7L JTEC vs NGC Question

[GeorgeM355]

I have a 2002 Ram with a blown 4.7L engine, it is the JTEC design.

I have recently picked up another 4.7L engine that came out of a 2003 Ram. I am assuming to it's NGC but I didn't get a look at the PCM.

My game plan is to rebuild the 2003 engine and put it in my 2002 Ram.

Here's the information I have gathered from the internet, if you see some bad information let me know:

The 2002 the Dodge Ram was built JTEC early production and late production 2002 was built NGC.

The tone ring on the crankshaft is different.
JTEC = 16 tooth
NGC = 32 tooth

The reluctor ring on the passenger side cam has a different window pattern.

The PCM plug count is different:
JTEC = 3 plugs
NGC = 4 plugs

Are there any other compatibility issues I need to be concerned about besides the timing set?

 

[VicinSA]

You will need to put a JTEC crankshaft tone ring and a JTEC camshaft timing gear set in the 2003 engine. After that it is plug and play....or pray....lol

 

[EdGs]

Also check that the cam and crank sensors are not different between the two types as well.

Beyond that, I have not a clue. Good luck.