Quote:
Originally Posted by Jay S
Your math isn’t wrong. The instructions are often wrong and the keys are not all that accurate. You have not said that you degreed the cam in after using the different key. If you did and it worked as planned, you're good. Pay no attention to me.
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Ok, I think I am at 108 total advance at the Cam, now, you say you want me to check and prove this using the Degree wheel? If that is what you are saying, I like that idea. How do I prove that I am at 108 Cam degrees using the degree wheel, so I don't have to pull the water pump and timing cover off again, ruining the gaskets. Tonight, my roommate just did the Valve lash procedure on the Johnson Hydraulic Lifters and Cam using the Base Circle at Cam and the Valves being closed method.
Then we turned the nut 3/4 turn more while rotating the push rods until there is a slight resistance before the 3/4 turn. I believe we are advanced a little more than I intentionally intended, I was shooting for 109 total Cam advance, but I have read that 108 is also in the ball park for race ready concerns. I won't be taking this vehicle to the track to test whether it works at 60' times vs 1/4-mile times. What I want is a well-tuned Engine that is as performance orientated as it was built in 1967.
By the way this Motor is well documented with 2/22/68 date?, written on the Passenger side front Block. This 428 ci HO went to a machinist to be further modified with the "886" Cam and Tri-power Carbs. in 1968 and I possibly think someone Blueprinted this motor and balanced it for racing, just as my father did to his race vehicles. Now with the "041" Cam I am trying my best to make it performance orientated to the best of my ability. Oddly, the machine had to break down with odd noises for me to find out that the pistons are reversed and one isn't. I still believe that even though we won't know the reason until this Engine is fully disassembled, the why of it all, that the builder knew exactly what he was doing.JMO