351c Head ID

Cougar Community Classic Cougar Maintenance Restoration and Repair
1

I was told I could tell if my 351C heads were 2v or 4v by a 2 or 4 on the front of the head. I cannot seem to find it…Can someone give me a better description or a picture?

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2

If no 2 or 4 on the upper corners of the heads just outside of the valvecover, then those are 351M/400 heads.

3

http://www.mustangandfords.com/techarticles/engine/mufp_0606_351_cleveland_performance_engine_build/viewall.html Good article with pictures