This guy is talking about a 200cc ProMaxx heads top quality combustion chamber design. (chevy)
It looks about the same as the above Speedmaster to me. Nothing impeding the flow straight out of the valves other than a very small ridge, plug hole protrusion, and possible deshrouding depending on head gasket size.
"Old" member Registered: Sep 2001 Lost my credentials, I'm Back!! LOL 71 Ply Satellite Procharged 73 Dodge Dart Swinger 73 Ford F-100 390/Sniper efi/back to carb 01 Town and Country Limited 08 Dodge 2500 6.7 5" Deleted 02 Mercedes C230K 19 Camry