Quote:
Originally Posted by Ronnieroadster
Welcome to the Ford Barn
Since your running a reground cam with the L-100 profile you will find if you take the time to do the actual cam timing the cam will be way out of spec. The original L-100 timing card specified advanced 4 degrees that was not ignition timing that was the cam location in relationship to the crank shaft. Once a cam is reground the new profile is never in the exact location as the original lobe thats why all aftermarket profiles as well as new cams must be checked. You will find if you take the time to check the actual cam at .050 as per the timing card its going to off. This requires the cam bolting location to the cam gear will need to be corrected.
Ronnieroadster
P.S. Checking the cam timing on all of the huge amount of Flathead engines I have built and continue to build has proven to me they all need to be corrected.
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Having a motor built by Ronnie has been one huge learning experience. We used a Potvin 3/8ths cam that was ground by Moon.
Straight up, it was actually 119 degrees when it should have been 110. If we would have just put it in as ground, the cam would have been a total turd.
As Ron mentioned, he machined the gear to correct it. It is now dead nuts correct as per the timing card specs @ .050”