Originally Posted by weylinthedirty
Well I didnt read all the way down so sorry for replying if your question was already answered lol.
When I put a gear drive on my SBC 350 it called for a bearing behind the gear on the cam shaft, and a button on the front. The bearing was "rounded" to a degree (0, 2, 4, 6, 8) they came in a color coded set with my gear drive.
I -believe- the degree of the cam bearing was direct with what degree before TDC you wanted the engine to run. I used 0 degrees. in a stock setup.
Then the cam gear bolted on, and when you install the timing cover a button goes right in the center and has to have a tiny amount of back pressure againt the timing cover (to much will eat a hole threw the cover)