Nu-Rex wrench ???

[Y-Blockhead]

My recommendation is that, for any given distributor, you check the wrench’s result against a light/ohmmeter. If it’s the same, you can then save time by using the wrench with that particular distributor in the future, unless you change something.

What alexiskai said... Of course we all know that once the rubbing block wears, unless you readjust the point gap to compensate, the timing is going to change so where the wrench points is going to be off anyway.

 

[81ls1camaro]

When I time it the old fashioned way with a test light, this is where the wrench ends up.

I put modern points in my 28 and I just worked on another car that had the same. The timing wrench as you have shown does not end up where Nu-Rex intended. It actually ends up in exactly the same spot as yours, on both cars.