ima noob.... head numbers

[laynlocrx]

i had 2 complete heads given to me, one is a p74-1 and the other is a p73-2. i know they are both b series but what are they are they a b18a or b18b?? thanks in advance

[SlowboyMike]

p73-2- I believe its a b16 head
and a p74 is a b18

[laynlocrx]

thanks mike you wouldnt happend to know if it wa a b18a or a b18b would ya

[EK9Civic]

A p72 head is a gsr, p73 head is from the Type R series.
A p74 is from a B18B as is a P75. Also B18A code is PR4.

[isl_cruiser]

^^^ ^^^

My b16a2 is a pr3-2 and my b18a1 is a pr4-2