i have a 97 Gsr and i blew the motor now im gettin it rebuilt right now and i have a b16a3 head outta a 99 si what do you think would give me more power that 97 gsr or tha Si head help!!!

 

if you're running GSR pistons you'll need to run a gsr head to maintain the same amount of power. using the B16 head will lower compression a little unless you use different pistons like ITR pistons.

 

don't use a b16 head . the intake manifold are different. plus the deck heigh are different as well .

 

Thought all b series manifolds were the same--Intake and exhaust

 

Oh hell no. There are three different intake manifold bolt patterns (PR3, PR4, and P72) and multiple different exhaust manfolds (though all B-series share the same exhaust side bolt pattern.)

As for the post about deck height, that doesn't make a difference. You can interchange PR3 and P72 heads at will, given the matching intake manifold.

 

Let me clarify, Cause I still don't know, and would like to--I know the manifolds themselves aren't the same, I meant about the bolt patterns...won't any B-series mani bolt up to this guy's block?

 

I already said in my last post, no, intake manifolds are NOT interchangeable. The stud pattern is different through B16A based PR3 heads, non-VTEC B18A PR4 heads, and B18C1 based P72's.

The exhaust manifolds are fully interchangable.