Whats the rocker arm manufacture say? Jesel calls for 3/4 thread as idea, no more than 1 1/2......If I am at 1 1/2 thread IMO its pretty good shape....3 treads is too much, and I would be looking at longer push rods, or at least adding lash caps and checking things out...
Again check with the rocker company..


[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]