One of those chinesium distributors huh? I can’t say whether it’s “correct” or not. I have never seen one up close but I will presume it’s built similarly to the delco remy 2304 which is correct for a 62 motor. The other thing is are you using an 62 flywheel of something else, because if the weights and springs look good, the only real way to tell is to plot the advance.
So first, take the point plate off and look at the advance weights, springs. Make sure it’s all lubricated and not rusted solid. If it looks complete and is free moving, you will have to plot the advance to see what it’s doing.
For that you will need to know tdc. That is the reason I ask what flywheel you are using.
Assuming a 62 flywheel, you will need a dial back timing light and a tachometer. The specifications I can give you if you decide to tackle this. Disconnect and plug the vacuum advance. Start motor, adjust idle to factory specification, check that the timing is set at tdc on the flywheel.
Mechanical advance starts at about 300 rpm, so 0-1 degree of advance at 300 distributor rpm, which you double to get the figure at engine rpm. So 2 degrees at 600 engine rpm, 8-12 at 1400 engine rpm, 18-22 at 2700 engine rpm, and 24-28 at 3500 rpm. Bring the motor to 600 and use the dial back light to determine whether you are getting advance at 600 rpm and what that advance is. Then go up to 1400 rpm, same drill, until you have plotted out the advance, so many degrees advance at so many rpm’s.
Otherwise, you will need to take the distributor to someone with a Sun Distributor Machine and have them put it on the machine and see what it looks like.
