Timing lights

I still like at least 5* clear out to 55 (vacuum advance)

It is important also, NOT to use calipers or dividers, etc, to measure on the balancer. You MUST use, as previously suggested, a tape or cut piece of paper to follow the curve of the balancer.

The way I like to do them is measure out 40*, and mark the balancer. Then use dividers to cut that in half, which of course is 20, and you can check your new 20 mark from TDC, and the 40 mark, so, checking your measurement. Then mark the same setting from 40 with your 20 to give you 60.

Then divide 20 in half, and check that two directions as before, so now you have every 10 out to 60

Last, if you want, divide down to 5, etc.

I also START with a piston stop so's I know that TDC is actually accurate.

"Back then" I used to find a fair amount of Ferd 352/ 390s which had slipped.

This jus' ain't that hard. Maybe an hour "on the engine" less if the balancer is off. On some cars I used to lay underneath, easier

Everytime you play with the timing, doing this once saves you time afterwards.