Can somebody tell me the following details about the cylinder heads & cams???

MY93 WRX
STI V1,2,3 & 4
STI RA if its any different to the normal STI.

Thanks in advance

 

I think the wild cams are STi3's, don't think any head difference between STi & RA

Mark A

 

Yip i have a set of them lined up. I was just wondering what the lift and duration are on the cams above for these heads. Also if the port size is of any difference.

I know the sti heads have solid lifters and stronger valves and wrx ones hydraulic lifters. Any other difference??