[SeniorRodder]

Does any after-market head manufacturer make cast iron heads for the 400 SBC with 76cc combustion chambers and 200 cc intake runners? I need 76cc chambers to work with my flat-top pistons to get the compression ratio down to 9.7 to 1 after decking the block to reduce the quench area to 0.054".

[my87Z]

i can't find any that make an iron head with 76cc and 200cc runners, but i do see some alm heads but you will pay a decent penny for them. my best advice for you would be to buy a set of 72cc/200cc iron heads as they are of an abundant supply and have the chambers opened up to what ever you want. i would acutally recomend having them opended up more than the 76cc's so you will be able to get a tighter quench. having the combustion chamber on a set of heads opend up is not too expensive, although having it done with steel head will probably cost you a little more than having it done to a set of allm heads would

[ericnova72]

Yep^^^, you'll have to buy the 72cc and rework the chamber to 76cc yourself, or have someone do it. Not a hard job if you have some experience with a die grinder.

You might try an authorized Dart distributor, they may have the ability to get a pair special ordered with less metal removed from the face leaving the chambers deeper. I don't know for sure, seems like I've heard they will, but you might have a wait to get them.