Can someone confirm these are stage 2.5 PRC 5.3 heads...
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Hi guys,
I saw pics of PRC stage 2.5 PRC 5.3 heads in other posts that had "STAGE 2.5" engraved above the serial number but these don't. Looking for any other way to confirm that are stage 2.5 59CC heads before I buy them.
Thanks!!
![](http://img28.imageshack.us/img28/7060/1headcopy.jpg)
![](http://img812.imageshack.us/img812/1021/2headcopy.jpg)
![](http://img51.imageshack.us/img51/6000/3headcopy.jpg)
![](http://img84.imageshack.us/img84/6230/4headcopy.jpg)
![](http://img819.imageshack.us/img819/3038/5headcopy.jpg)
![](http://img39.imageshack.us/img39/889/6headcopy.jpg)
I saw pics of PRC stage 2.5 PRC 5.3 heads in other posts that had "STAGE 2.5" engraved above the serial number but these don't. Looking for any other way to confirm that are stage 2.5 59CC heads before I buy them.
Thanks!!
![](http://img28.imageshack.us/img28/7060/1headcopy.jpg)
![](http://img812.imageshack.us/img812/1021/2headcopy.jpg)
![](http://img51.imageshack.us/img51/6000/3headcopy.jpg)
![](http://img84.imageshack.us/img84/6230/4headcopy.jpg)
![](http://img819.imageshack.us/img819/3038/5headcopy.jpg)
![](http://img39.imageshack.us/img39/889/6headcopy.jpg)
![](http://img684.imageshack.us/img684/9619/7headcopy.jpg)
Last edited by NTIMD8; 03-05-2011 at 03:47 PM.
#5
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There are still a few cast numbers under the valve cover rail and maybe even on the bottom side of the head that will tell which casting they are.
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!