Combustion Chamber on 241 heads

I tried searching and came up empty handed. I am researching cylinder heads for my 04 and was curious what the stock combustion chamber size is on the stock 241 heads as well as 243's?

I am looking for a cost effective cylinder head and don't want my compression going up past 11:1 since I have the maggie. I also don't want compression to go below 10.5:1 for the same reason.

Any help would be appreciated.

http://lmgtfy.com/?q=LS1+241+heads&l=1

Thanks and for those that are intersted this is what was found thanks to Lothar pointing out my crappy search terms.

Casting Number 241
Head: 1997+ LS1 5.7 Litre Passenger Car
Material: Aluminimum
Part Number:
12559853 (1997-98)
12559853 (1999-00) (not sure why same PN)
12564241 (2001-03)
Combustion Chamber Volume: 66.67cc
Compression Ratio: 10.1:1
Intake Port Volume: 200cc
Exhaust Port Volume: 70cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches


Casting Number 243
Head: 2001 LS6 5.7 Litre Passenger Car
Material: Aluminimum
Part Number:
12564243
Combustion Chamber Volume: 64.45cc
Compression Ratio: 10.5:1
Intake Port Volume: 210cc
Exhaust Port Volume: 75cc
Intake Valve Diameter: 2.00 inches
Exhaust Valve Diameter: 1.55 inches