looking for BBC heads casting #990
 

need three pair of heads for GEN IV motors casting number 990

Re: looking for BBC heads casting #990
 

You probably already know GM does not make them. Unless someone has some laying around used your in luck. Other option is to go for merlins.

Re: looking for BBC heads casting #990
 

I have 2 pair. 3 of them are cracked between the valves. Still interrested?

Re: looking for BBC heads casting #990
 

I Have A Pair Of Cast # 14096188 New Valves Perfeft Shape. Not Sure If They Are The Same. Ron Bender 216-390-1330

Re: looking for BBC heads casting #990
 

I also have a pair

Re: looking for BBC heads casting #990
 

posted on another thread GM does not make them but GM performance does or at least did GM and GM Performance are two separate operations

Re: looking for BBC heads casting #990
 

That is correct but the updated casting number is the 188. I bought a pair from Scroggin-Dickey Performance out of Texas. The specs are all the same just the casting number is different.

Re: looking for BBC heads casting #990
 

I have 1 pair oe 188s...cracked the same place.. :D

Re: looking for BBC heads casting #990
 

Thanks everyone i have plenty of cracked ones.

ScarabScoundroul how much for the one that is not cracked maybe this way i can make one pair for someone that needs a set.

i have decided to go with merlin heads. I am afraid that if this many are cracked their is a problem.

birdog are both of them cracked.

Re: looking for BBC heads casting #990
 

[QUOTE=guillermof]I have decided to go with merlin heads. I am afraid that if this many are cracked their is a problem./QUOTE]

Yep, and more than likely the problem is stock Merc risers/manifolds. That's what trashed mine.