Chamber size for iron head stroker

IDK mopar went open chamber for better emissions, dropped the compression, kept the hP cams with 114 lcas and long lazy ramps- ruined to great engines

UDHarold wrote 2007

PS---You are correct. Wider LSAs generally give lower emissions, particularly at idle. These cams are very efficient and pretty clean-burning. I do not know if Holley has had them certified or not.

and in the very next post
You have to be careful going with too wide a lobe center. It does cut down on the amount of raw fuel going through at overlap, but it can also cause the NOX to go up.
I believe California still measures for that.
Mike Jones
Jones Cam Designs
Mopar stroker cam selection? Please help! - Don Terrill’s Speed-Talk