[gregaust]

See your other post I added the specs . It was a solid roller cam not hydraulic

 

[gregaust]

or what the lash on the solid roller was

.028"

 

[gregaust]

 

[gregaust]

 

[gregaust]

 

[gregaust]

The valve lash is from Super Ford dyno tests article . The rest is from the 99 Ford Racing Catalogue.
But if you look close they mention both 647 & 640 further down the page .

In the 2004 Ford Racing catalogue they list that camshaft separate as M-6250-A514 254/258@.050" , 304/308 ADV , 647/647.

In another dyno test I have saved on a later SCJ head 514 by Comp cams they list it as 640/640..

So lol make up your own mind or measure what you have

 

[gregaust]

It's all there glad you like