Trick Flow heads

Booboo

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I have the option to buy an engine with Trick FLow heads on it. The heads have TFS-FMOD-1 stamped on them. What heads are these?
 

lwarrior1016

Mr. Secondary Timing Chain
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Not real sure which heads those are specifically. Maybe look around for some other numbers that’ll give the chamber size and runner volume. One thing to make note of, the trick flow heads use a different cam than the standard 4.6l does. The cam will physically fit and it will run, but valve timing events will not be correct and it will be down on power.
 

07GtS197

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Looking at their website it looks like there is going to be a number on the corner of the head next to the timing cover below the valve cover if that makes sense. It’ll be near the first exhaust port. From their website

630AE041-B23C-4D19-8781-629495944A88.jpeg
 

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