318 vacuum advance

Mattax said
Which one? The one in the car or the one removed?

What rpm did you set the initial at?

I assume you mean the '69 Dodge Shop manual spec for 318 with Clean Air System.
The distributor you have, if it really is to specs for a '78 truck, is probably set more like a non-CAS.
Parts store distributors are sortof one size fits most so lets not count on that being 100% like the oriignal '78 ramcharger.

Great!

I agree 100% one fits all, yes I used the 1969 shop manual I’ve tried all different timing positions with same results. I’m assuming I’m going to have to mess with the springs in the distributor. One other thing it’s a 2 barrel engine and have the vac line in the pass side of the carb, thanks for your help