# B16 head mated to a B18c5 block?

**URL:** <https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182>\
**Category:** Hybrids & Advanced Aftermarket Engine Performance\
**Created:** [April 3, 2006, 3:45pm UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182 "2006-04-03T15:45:13Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![system](https://forum.g2ic.com/user_avatar/forum.g2ic.com/system/32/1_2.png) [@system](https://forum.g2ic.com/u/system)\
**Post date:** [April 3, 2006, 3:45pm UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182/1 "2006-04-03T15:45:13Z")

</div>

Would a b16 head fit without any major modifications on a b18c5 block? I really dont hear to much about this swap…

I am selling my type R block and a b16 head and didn’t know if I could sell it as a whole motor…

Thanks

---

<div class="post-metadata">

**Author:** ![system](https://forum.g2ic.com/user_avatar/forum.g2ic.com/system/32/1_2.png) [@system](https://forum.g2ic.com/u/system)\
**Post date:** [April 3, 2006, 4:01pm UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182/2 "2006-04-03T16:01:05Z")

</div>

B16A and B18C/B18C5 heads are both PR3 castings, which means they are the same head. The B18C/B18C5 receives a bit of special treatment from the factory, but otherwise they are identical.

---

<div class="post-metadata">

**Author:** ![system](https://forum.g2ic.com/user_avatar/forum.g2ic.com/system/32/1_2.png) [@system](https://forum.g2ic.com/u/system)\
**Post date:** [April 4, 2006, 5:29am UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182/3 "2006-04-04T05:29:02Z")

</div>

doing that would give you the poor mans itr. because the b16 head flows alot better then the gsr.

---

<div class="post-metadata">

**Author:** ![KraZEtEggIE](https://forum.g2ic.com/letter_avatar_proxy/v4/letter/k/dbc845/32.png) [@KraZEtEggIE](https://forum.g2ic.com/u/KraZEtEggIE)\
**Post date:** [April 4, 2006, 5:43am UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182/4 "2006-04-04T05:43:22Z")

</div>

poorman itr = b18c1 or b18c(jdm non-itr) w/ pr3 head(b16 or itr)  
itr motor = b18c5 or b18c(R) w/ pr3 head with itr marking  
itr motor w/ b16 head = b18c5 or b18c(R) w/ pr3 head and no itr marking  
tegboi motor = b18c5 or b18c(R) w/ pr4 ls head… :run:

to answer your next question the only way to tell an itr head from a b16 head is the itr head has a green mark on the cam hold down right next to the distributor. i would throw the motor together and sell it for what it is. it should sell for a little less than an itr motor.

---

<div class="post-metadata">

**Author:** ![tegboi](https://forum.g2ic.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tegboi](https://forum.g2ic.com/u/tegboi)\
**Post date:** [April 9, 2006, 10:07pm UTC](https://forum.g2ic.com/t/b16-head-mated-to-a-b18c5-block/70182/5 "2006-04-09T22:07:33Z")

</div>

haha wow, i have my own motor setup :bowthank: