My changes between the two heads were very different then Toms cylinder head swap. It was not just a point of compression it was over 2 points.
Plus like I stated earlier,I would never use a 1.94" valve in a 194 cyl head,it's too shorouded by the chamber.CFM drops dramatically!
Toms 194 head had a 1.94" valve.IIRC?
I have gotten more CFM out of my 1.85" intake valved 194 CI head over a 194CI head w/a 1.94" intake valve installed.
If you do not have a correct throat cut or correct angles cut on the valves,seat widths,etc,, you can loose serious cfm.
A poor valve job will kill,absolutely kill CFM flow.
I am not just talking about the valves sealing.
Tom stated he was going to get the heads flow tested over a week ago,,,what are the results? What are the numbers?
My open chamber head had about 10.1:1 compression,then the small chamber head was cut ,thus increasing compression,less chamber wall to impead airflow. Raiseing the compression to 12.0:1
I am not saying my combo made alot more HP,,,,I am stating it made A LOT more torque w/the 194 Head & torque is what you can really feel.
My comparisions are racing my friends cars before & after I do all my changes & swaps. Dead stops,roll ons,etc.
My car w/the 194 cylinder head consistantly pulled better everywhere over my friends cars. They did not do any changes to there cars for this reason,to make equal comparisions.
I was the only one making changes.
I am sticking to it. Sorry.Guess I'm stubborn
I do think quite honetly, Toms chambers were either not unshrouded enough,valve throats incorrect,angles off,something,, or something is amiss.
Thats my thoughts on that matter.
Lets not hijack this guys thread anymore.
Back to Time to get building.
MBHD
