Thanks Mark, definitely appreciate the fast reply. Richard put my engine together and only made a soft mod to the cams, I have that spec. I had to buy a used set of cams out of Spain years ago before the engine rebuild as the car's cams were eaten up and disposed of years before I bought it and believe them to be S cams.....long story involving cam failure of the SPICA drive cam, getting a new cam out of Europe, etc.....
Thanks, Webcam modified mine to Richard's specs. This replacement cam is of a different profile to the other three and supplier indicates that is a stock one so we are trying to figure out what differences are to explain the cams I have, beyond Richard's mods.
I thought that the only place where the "S" appeared was on the Distributor. Don't believe there was a "S" Engine for the Montreal...? If there was a "S" engine, what else was different...? Modifying a Camshaft Lobe Profile and running it with a "S" Distributor does not make it a "S" engine. At least not from the Alfa factory, correct me if I am wrong.
Thanks! I have no evidence that there was a separate cam profile. Was just asking because what I have is not "standard" Monty spec cams. These cams were bought by me used out of Europe so maybe a special profile?
The four engine camshafts all have the same profile. Not one being different from the other three.
The difference in the Webcam profile and original is next to nothing. I looked at the details when I had the work done, and, as explained to me, the only significant difference is in the opening and closing ramps. I was told the Webcam approach allows a thinner “lash” than original. IIRC, the Webcam spec is .011” intake and .012” exhaust.