[Fot] Valve Spring Installed Height Dimension

[Glenn Franco]

Group
Does anyone out there have the proper dimension for valve installed 
height for a later model 1974 TR6 engine.
This is the dimension between the valve spring retainer and head.
I remember finding this for my Spit Race car engine but can't seem to 
locate it for the TR6.
I just finished up a 3 angle valve job on a customers car and I would 
like to assemble it with the proper shims but can't seem to locate the 
right dimension.
Currently the height after machining it is 1.250".
My machine shop can't find the dimension either.
Any help would be appreciated.
Thanks
Glenn Franco