What Holley heads do I have?

[Shadrack]

I've been trying to find out what heads I have on my car. The only numbers I can see are on the front of the drivers side head. The number reads..... 12157...... does anyone have a clue what model/size these heads are? Where can I find the serial number (or is that the serial number)?

Any help would be appreciated.
Thanks!

 

[86bluecobra]

when did you buy the heads? They only make 1 set of heads now it looks like for the fords a 2.02 1.6 valve ones. I have holley systemax II heads from 5 years ago they were 1.94 1.6 valves. http://users.erols.com/srweiss/tablehdc.htm#Ford scroll down to windsor then down to holley systemaxthose are the flow numbers for the 1.94 intake valve heads

 

[Shadrack]

I bought the car with the heads already on it. I think they are the Systemax heads, not the Systemax II heads.

 

[Rick 91GT]

Do they have stud or ped mount rockers?

 

[Shadrack]

View attachment 495348

 

[Rick 91GT]

Stud mount...

They are most likely the new series head, which are very good and respond well to some porting. Biggest I have is the cheap locks they use.

The best way to confirm would be measuring the valves. Holley only makes 2 stud mount heads, 300-573 and a 300-575 they have different size intake valves. You could call Holley Tech, although I find them hit or miss at times. They will need the numbers that are cast on the head inbetween the rockers like you have pictured.
I ran the 300-575 and they are a really nice head, and if I remember correctly it had 12157 on the front. I am trying to find my old pics

 

[Busted07]

View attachment 495271

do you have any other pictures of your engine bay? im trying to decide how to route some things, and i like how yours looks from that picture