Distributor recurve

What RRR says above the VA unit failing is correct.

But some common sense needs to be applied here. Right now I have two failed Mopar dist on my bench, both have VA. But the VA units haven't failed, the p/up wires have broken from flexing. No way you would get home with these with the best tools in the world. These dists came off production engines, & the VA units were connected to ported VA. Not that it really matters. Lots of things can fail on the road: dead battery, coil goes out, fuel pump fails. Etc.