Where are ignition gap points dwell?

Answer 1

Ignition points are found beneath the distributor cap. Sets have 1 or two pieces depending on the brand. It looks like a small record player arm without the turntable. As the distributor shaft turns the gap opens and close rapidly, allowing coil voltage build and then pass through to the rotor and distributor cap. There is also a small device called a condenser attached to the points with a wire. It looks like a small cylinder. It should be replaced if you don't know its age or condition.

The dwell angle for V-8 engines is commonly accepted as 28-32 degrees. It is best checked using a dwell meter. You can also set the point gap using a paper matchbook cover. Insert the cover and close the gap using the adjustment screw until you feel slight drag on the matchbook cover when you remove it. That trick will get you close enough to run the engine and fine-tune it properly.

Make sure you set the ignition timing after the dwell is set. Dwell will change your base timing, but not the other way around.