Spark plug thread hole sizes in heads/Plug length ?

[SAXBY2]

Does any one have at hand the spark plug hole thread depths for a stock A head and a Brumfield 5.9 head ?
The stockers can be measured, but no Brumfield available to check.
Thanks Gary.

 

[Gary WA]

Re: Spark plug thread hole sizes in heads

Does any one have at hand the spark plug hole thread depths for a stock A head and a Brumfield 5.9 head ?
The stockers can be measured, but no Brumfield available to check.

My Brumfield measures +- 0.72" thread depth