Cant remember the clearance between the valves but there is a good margin.
The valves are spaced further apart than a stock head.
Mike Kirby's race head uses 2.11 intake valves. Same as my head but bigger valves & a lot more porting.
Stock head gasket fits.
Did not need to relieve the top of the cylinder ,but I am thinking I will do so to futher improve airflow. Like BBC's
I was hoping to run a shaft mounted Jessel set-up but the valve cover is too close to the rocker arm mounts,& valve cover would be too close.
I would have to modify it for a Jessel set-up to work.
It would be cool to do so but probably not be worth the time or money.
So I will use standard BBC roller rocker arm set-up for now. It will work just fine.
