Performance timing

Set initial timing at Idle no vac connected at 16*
Use our limiter plate on the 18* slot + the 16* Initial = total of 34* Mechanical
Start with our silver springs and adjust from there to achieve all timing in at about 3200 RPM.
Now plug in the Vacuum Can and adjust it to get the timing to about 30* at idle.
MP wanted the part number as they haven't made a distributor for Probably 20 Years and what you have is probably a Chinese ProForm and not a MP distributor.
Pull the cap and rotor, if the shaft is bronze it's a real MP distributor if it's steel it's a Imported Fake.

MP distributors have a 2 screw limiter system and the plate is not required as you loosen the screws and slide the plate in the slots to limit the timing. (the gauges for setting these are discontinued, I have at least 50 sets in stock)

Real Mopar distributors also have rotating spring anchor pins as you turn the pin it will slide .060 in either direction to tighten or relieve the spring resistance to fine tune the all in timing numbers. Most of the copies do not offer this feature.

Just because the vacuum advance can has the Large Hex molded into it, which is the SAE standard designation for an adjustable vacuum canister, doesn't mean it is actually adjustable. The imports use that can style but there's nothing inside it to adjust, just another way of making it cheaper and they're betting on the fact you have no idea how to adjust it or why anyhow.

Your 214 @ 50 cam should generate easily 18 to 20" of vacuum at idle with 30* of initial or Idle timing and the engine should idle nicely around 750 RPM.

Stock vacuum cans usually won't activate with less than 12" Vacuum so big cam motors can't take advantage of the vacuum canister to achieve a good tune-up. We hand build a Vacuum Can for Mopar big and small blocks that will read and fully engage at 5".

That little motor of yours MUST run a Vac Advance and it needs to be set-up to the 30* at idle and previously mentioned and also pull the timing up to the mid 40*s at part throttle cruise or you'll get 8 MPG.

Assuming you have hopefully removed all the emissions crap you can now connect your vacuum to a constant manifold source to tune your distributor so you can run today's pump gas.

Now once you get it all dialed in you need to look at your ignition box.... is it the Famous Orange box as supplied with the distributor? That box will retard the timing starting at 3200 and by 5200 it'll have it backed up 8* and output will drop to 15 to 20KW so all your work is lost, sort of like trying to get drunk on Non-Alcoholic beer.

I also engineered and designed the HRR688 Computer controlled Ignition box that solves all the issues that ALL transistorized ignition boxes have.... and comes with a 5 Year Warranty!
Do it right the 1st time, it's cheaper in the long run.

All FBO Ignition parts are also available from Mancini Racing.