Tone rings

I hope this helps...

1999-2002 4.7L - Jtec PCMs (3-plug PCM) use a 16 tooth tone ring
2003-2007 4.7L - NGC PCM (4-Plug PCM) use a 32 tooth tone ring
2008-up 4.7L - Im not sure, they may still use the NGC 32 tooth tone ring.


Also the CAM tone ring goes hand in hand with the PCM as well...so you need to make sure your camshaft tone ring goes with the correct crankshaft tone ring with the correct PCM.

The transition was done in the 2003 year and you may find a Jtec in a 2003 year 4.7L... So double check the PCM to make sure what you have.

SPEED SAFE, AIR RAM

Yeah... I'm going on my experience with the Rams... so I dont know everything... even though I try to. But thats good to know.

SPEED SAFE, AIR RAM