Need help with SVO head identification

[ES Stangin]

I was taking the alt. bracket off of the car, and looked at the head and was kinda curious why it didnt look rusted like cast iron. After taking a closer look I noticed an italicized SVO emblem.. Im so happy.. and sad..

The last time at the track I ran a 15.2, which was due to very poor traction, but the car also started to idle really rough and want to stall.

Anyway, Im going to check for anymore markings, but can somebody give me an idea of what they could be?

 

[v6v8swap]

Sounds like either Y303 or X303 heads. Pull a valve cover and look for a number like Y302 or X302 like this one:

View attachment 487207

The 302 number is the bare head casting number so the Y head has Y302 or the X head has X302 in the valve spring/rocker arm area.
Does the svo on the end look like this?:
View attachment 487208

I hope this helps.

Phil

 

[ES Stangin]

I pulled the valve cover and its the Y-302 head with Crane Arms roller rockers..

View attachment 487156

Even though I wish I had the GT40X heads, Im still happy considering that I didnt have to buy them..

 

[v6v8swap]

Even though I wish I had the GT40X heads, Im still happy considering that I didnt have to buy them..

That's a nice surprise since you didn't know that you had aluminum heads.

Phil

 

[Slow5.0]

Dang Jeff your car is slow crapola j/k

With only welded Flows and everything else stock even silancer in place my Stang went 15.1@89 with 2.4 60ft with stock ZR45 GoodYear's

Get some cam ,E303 meybe ,take those cats and get an Off road H or X ,i know you have plan get turbo but untill then get an cheap Off road pipe
Get some UCA/LCA and some DRs
Dang it ,just copy me i don't care

I will help you out , anything to help local fellow friend with Stang against chevy boys