Duel function vac advance

[Buckeye Bird]

Are there any known sources for the OEM dual function vacuum advance unit (10 degrees electric retard at idle) for 70s big blocks?

 

[72RoadrunnerGTX]

Have you checked Ebay? Always seams to be a few different NOS versions of those for sale.

 

[Buckeye Bird]

Have you checked Ebay? Always seams to be a few different NOS versions of those for sale.

Thanks for your help. Just ordered (alleged to be correct) NSO unit. Now we will see if it works. $180.00 gamble!

 

[hunt2elk]

@HALIFAXHOPS might have a source for them.

 

[F4R/T]

Ray can fix you up. Those things are pain in the rear but I have one myself.

 

[HALIFAXHOPS]

I have them tested and both sides work NOS. Usually takes three to get two good ones so beware no returns on NOS