I've purchased a rebuilt 4.7 and have installed the engine. I have no ignition. I know that the Jtech requires a 16 tooth tone ring. I'm just trying to find out what the window configuration is for the camshaft reluctor. I'm pretty sure that I was sold the wrong engine.

​​​​​​I Really need some assistance!

 

If you can access the RH cam sprocket, if it's NGC it should be stamped. JTEC has no marking (OEM).

There are 8 sets of slots in the reluctors. CW from the keyway JTEC would be: 1,1,3,1,2,3,3,2
NGC would be: 1,3,1,2,2,3,2,1

 

3 PCM connectors is 16 teeth, 4 PCM connectors is 32 teeth. Visually the engines are identical.

 

Thanks so much. I didn't receive the correct engine. They sent an NGC, My PCM is a Jtech.

 

so both engines have 16 cam teeth, it's only the crank that changes 16/32? Good news to know!