Which RB25DET head is the best?

[seanski96]

Which RB25DET head is the best?

*Admin delete this if it is not allowed*

To whom may be reading this, 

I have tried going through all avenues to find an answer to this question but it seems there isn't a solid answer to it so I have decided to ask here as I know someone will know. 

I have heard people talk about the series 2 rb25det head being the best head for a high hp rb25det (high being around the 500 rwhp mark) application; my question is which one of the heads is best suited for this application? Or does it not matter whatsoever? Just asking this now for anyone in the future who is wondering the same thing as I am.

As per usual with my posts, I will much much appreciate any help whatsoever with this subject .

Regards, 

-s

[tridentt150v]

20 second search....

 

 

[discopotato03]

R34GTT or "Neo" head . Shim over bucket clearance adjustment and better cam profiles . Smaller cc chambers need Neo spec pistons to keep the std CR , same 9.0 to 1 static as R33 RB25DET engines . Neo spec pistons have larger diameter gudgeon pins and use RB26 rods as original equipment .

No brainer IMO .

A .