Originally Posted by FEandGoingBroke
Red, with all your EGR stuff and vacuum disconnected the stock Vacuum advance and the curve of that Dist will NOT work properly. There are Thermal ports on the intake that change the way the advance works according to temperature and other things, I suggest that you get your dist figured out as to it's mech. adv and what RPM it comes in at and find out where you have your vacuum coming into play, ad idle or when throttle opens.
Your engine should run fine out of gear with mechanical vacuum only.
But as Dan said it's old so don't expect too much out of it.
And on another note... Please explain to me your miss and how and when it comes into play when running the engine.
How do I fix that curve issue? But when it is hot, wouldn't it act the same? I can always make a simple connection at one of the temp ports?
it is ported vac, so no advance until rpm, plus the mech advance. I am getting a new dist today, so I will see if anything gets better with that... but the vac bulb is the same on this as any of my other rigs...?
because when it is warm or cold, at rpm it runs pretty good.
I know what a good running engine sounds like (and a decent running high miles tired engine). I have fixed up a half dozen of these old beasts, just not a 400, lots of FE's but this is my first 400.
at idle a good running stock engine should have a humming drone of v8 loveliness. a steady hmmmmmmmmmmmmmm with a slight rumble of big CI and glasspacks. this engine however has a stutter between that good sound. like Hmm*putut*hm*putut**puft*hmmmm*pupth*pupft*hmmm... I will get some footage of this.