Does anyone happen to know if there is a measurement out there for spring seat to valve stem tip on a '85 351W? Helps locate problems during assembly before getting as far as checking clearences by collapsing the lifter. Years ago I used to do heads in a shop and it seems to me we had premade tools to check height on all brands before the head was assembled. Any help out there?

 

Definately that specification is published. Perhaps a local auto machine shop would let you look at their engine data books.