Reply to "Seeking advice on camshaft selection"

The exhaust is a Loud Mind Train system with no baffles. It sounds quite nasty at high rpms. Exhaust sound is different from valve train noise. The big cam explains the 11 inch vacuum at idle and mediocre brakes . Brakes don’t match the speed & performance potential of the car despite having F & R vented rotors, 4 piston F & R calipers, Porterfield R4S pads, GM master, braided lines and no brake proportioning valve. Again, its all relative mediocre to me may not be mediocre to someone else.
Idle speed varies between 650 and 800 rpms. It is slightly less lopey if idle speed is raised to 800 plus rpms.
Car was converted to GP4 specs and the motor was built by previous owners. I do not have any details but, I cannot complain about its performance. I’ve owned it for 6 years and as I mentioned earlier, it always had this valve train noise. I was told that it is probably lifter noise as it is mostly towards the front of the motor. With a solid lifter cam, the noise should be more consistent between the front and rear of the motor. Also, engine performance has not deteriorated a bit over time .
Whether or not it is a 294 grind solid lifter cam, I don’t know. However, there are similarities. Bottom line is that I either show it to a Ford high performance engine specialist to identify the cam etc or just drive it and enjoy it and not worry about noisy valve train.
Thanks all for your feedback.