Starting to rebuild the Allen distributor machine

Made a Meager amount of progress. Bought some LM-2907 chips to rebuild the tach circuit, then decided to try a cheap digi tach on ebay. Just over 11 bucks, free shipping!!

Got the Mopar reluctor "Roughed in" still have to do a little work to make that fit. That will be the new tach trigger


Got a used medical vacuum pump (thrift store, of course) mounted, picked up some new 4 conductor wire for the motor wiring and got the motor re--mounted

Mounted the old, empty chassis to measure up so I can mod if for mounting the new digi tach
ok, I'm beginning to understand it. so what is the point behind the v8 reluctor adapted to the drive shaft? did you say it's for the tach signal? if so, how does it do that?