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Tone rings

11682 Views 12 Replies 8 Participants Last post by  Primus
I understand it to be that the 4.7L Powertechs from 2002 on have a 32 tooth tone ring and prior to that they are using a 16 tooth tone ring. I also understand that it is possible to swap the tone rings. Aside from swapping, can you get your PCM flashed or get a new PCM to use a 32 tooth tone ring engine in a truck that originally came with a 16 tooth tone ring powertech? Thanks.
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The 2008 and 2009’s have the 32 tooth crank wheel. I pulled one of each apart.

if you have the 4 plug PCM but only 3 plugs in it, you have a manual?
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