Matt,

Yes.  I've installed EGTs for dynamometer applications involving Trans-Am
engine and IRL alcohol engines.  Both installation locations were in the
header tube just downstream of the head mounting surface.  These were 650 -
700 hp engines.

You will also need to be aware of the penetration depth into the gas stream
as you do not know if the port is floor, roof or side loaded with airflow.

Since you're instrumenting for a test stand only you can certainly vary this
location to perform your own experiment to determine the optimum rotary
location.

Rick



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