Help ??? What is this
 

Hey guy's I need a little help!! I bought my car awhile ago used and it
had some mods done to it!! All the bolt ons and heads and so on. I decided to take off my upper intake Manfold and try to find out what heads it has, when I pulled off the valve covers what do I see Roller rockers:) But I dont know what size they are I attached a Pic of them can anyone tell me what size they are there is a F-72 stamped into them.?
Now for the heads they have a -y302 on them and a bunch of other #s does this mean they are the Y heads from ford they also say SVO on them!?

If they are the Y heads how good are they? are they good or just crap?:confused:

I am trying to figure out my combo any thoughts will help!!.

Pic
 

Sorry here is the pic

Well, the RR's might be 1.72 ratio. Mine are 1.6's and they have 1.6 stamped on them. They look like FMS but I could be wrong.

Don't take me as a final answer, I'm just giving you my best guess. :rolleyes:

Looks to me as you have 1.72 rockers. To know for sure exactly what Ford Racing head you have, call the Ford Racing technical hotline (586-468-1356). Give them the part number on the head and they should be able to look it up to tell you what it is for sure.

Sounds like 1.72 to me...