Quote:
Originally Posted by Tom Wesenberg
I think it was Marco who posted a good overlay picture showing how you can't grind an original cam and have it spec out the same. Anyway he did a good post showing why it can't be done, but I don't have time to find it now.
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Here's just a few cam regrinders that say that they will grind the stock cam profile on your stock cam...
http://www.elgincams.com/
If your camshaft is pitted, chipped, or worn, send it to us and we will grind it to either stock specifications or to a performance grind that meets your requirements.
http://www.oregoncamshaft.com/regrinding.html
we perform custom camshaft grinding to factory or performance profiles.
http://deltacam.com/
Custom camshaft grinding to factory or performance profiles.
Here's a diagram that may help. In this case, the grinder has actually increased the lift and duration of a stock cam. Notice that it is done by reducing the base circle. The same principal is applied when grinding a stock profile back on a stock cam.
One more...
It's tough to debate opinions or theories. If there are cam grinders that say it's impossible to put a stock grind back on a stock cam, or a profile with even MORE lift and duration onto a stock cam, please post links.