Adjustable Cam Gears - What to buy?

[RoninMax]

I just want to ask one thing. What make you think the cam timing will off when you shaved the head. Since the TDC and BDC with be the same (you did not shave the block). The cam timing is stall remain the same (you just shave the head means the compression area is smaller).

What is adj. cam gera for? It is for cam dialing purpose. If you are using performance camshaft, The duration, lift, cam lobe center is different from the stock one. Since the opening, closing, overlapping and lift of the valve overrange the stock cam gear, you need to use a cam gear to dialing the camshaft timing to match the TDC and BDC.

One the other hand, the cheapest adj cams gear in the market right now is TRD. They are only 65 USD each. But you will not what to use it. It is because the cam gear is not sliding type. The TRD one only have addition 6 hole you can adjust and there is no degree guage on the cams gear.

The little meter that on the cam gear means nothing to us since we dialing the camshaft to find the right timing of the camshaft. The cam dialing is a secret weapon for tuning the power band of the motor in the old days. For our shop, we can use the same camshaft to come up either more torque or more horsepower in what rpm range. One time, the motor get and additional 15 hosrepower by just doing the cam dialing.