my friend gave me these 2000 b18c5 heads,or at least he thinks they are type r, to install in my civic, i had some 98 gsr heads on a b20b4 before that but they went to hell and need an overhaul......anyways, i was looking at them yesterday and i noticed that the intake manifold looks alot like the one that comes with the gsr obd1 engine, i kept investigating and on the head itself i noticed a number(p72-1) if im not mistaken this number means the heads are gsr and not type r, he claims they are from a 2000 b18c5 but i think he is wrong......any help trying to come to an end to this issue?

 

GSR= P72
TYPE R/B16=PR3

 

Someone posted this info.

https://honda-tech.com/forums/acura-integra-type-r-8/b18cr-head-identification-2700123/

 

it's another gsr head, however, don't fret. the performance of the pr3 and p72 casting is nearly identical. if you're going to rebuild anyway it really doesn't matter which head you choose.

 

true they are almost identical but still the type r feels a lil bit stronger when it comes down to it.......

 

= all in your head

 

all the ITR has is a MILD port job, a little better cams, better valves. It's upgraded, but I doubt it would be like going from a LS to a GSR head.

 

Talking to the guys at Logic Motorsports they told me with identical builds except the head were very close. They said the PR3 showed just a bit more whp and the P72 a bit more wtq.

 

what would you rather go with if you were in my shoes?why?