Been trying to find some small chamber aftermarket ls heads. Is there any company that makes them in a 52 ish cc range or close enough they can miller that far? I read somewhere the c5r heads are like 30cc?

 

Have you considered a tfs 205 milled 35-40 thou?

 

Edelbrock 770469 might work for what you want.

 

JEEEEZ.... how does the air even make it out around the valves???

 

Curiosity killing the cat gotta know, what are you building that needs that small of a chamber?

Can you not do this with a dome piston instead?

 

For real; I'd think that the shrouding on those chambers would outweigh any possible advantage of the bump in compression.

 

From what I read you have to hve the chambers machined in.

I have a dome piston and .060 milled 862 heads now, little over 14:1 comp.

 

They are unported heads, You have them machined for your needs.

 

You’re going to need to start with a shallow valve angle head to get that without having to cut the decks to hell.

 

Different bore X stroke sizing available.
https://www.lsxceleration.com/mahle-...kit-930229665/

COMPRESSION RATIO W/ 65CC:14.2:1

 

If you going to run cathedral port intake you want to start with Edelbrock 619869 raw chambers 38cc

 

Why would u want a dome.
Ive angled milled .120 and straight cut .030 same head and lost 0 flow
maybe loose low lift flow frpm sinking the valves . Steeper seats. But who cares
Anyone really think more flow at 100 and 200 lift add power?