RE: {Chrysler 300} Re: 300K distributor curve chart

I always find it interesting how each engine gets its own curve and how it changes model to model despite very little change to the engine. Poor old engineers must have spent a long time in the dyno room…

Yet despite that, the Direct Connection Performance Book says, as a general rule a multi-purpose high performance machine should have full centrifugal advance by 2000 rpm regardless of the engine (including a 413). And Direct Performance would sell you one with that fast curve.

Maybe the factory settings are for a worst case like pulling a caravan up a mountain in the wrong gear? I can’t imagine they were concerned about emissions at the time.

Anyway, I would aim for the higher of the factory advance figures at the given rpms (unless you tow a caravan - ha).

Henry

From: 'ALLAN POZDOL' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx>
Sent: Tuesday, 11 March 2025 2:46 AM
To: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: {Chrysler 300} Re: 300K distributor curve chart

Thanks Bob,

Yes I did find this info online. My question is has anyone seen a logarithmic chart for the curve through the RPM range for the 64K.

The factory gives a range at certain RPM increments, but this does not give the ideal data points. Plus with a range, it will show a pretty fat line. Kind of shotgunning.

And with only certain datum points, there would not be a representative curve. Just a straight fat line between the RPM markers.

On 03/09/2025 7:31 PM CDT ALLAN POZDOL <apozdol@xxxxxxxxxxx> wrote:

Has anyone had their distributor restored and blueprinted, and have a curve chart to share? Or a factory chart?

I would like to dial this in, as I assume that the factory had a distinct curve in practice to squeeze 360 HP out of a single carb 413 for 1964.

The service manual only gives a range of degrees at a set RPM.

Thanks!

Allan

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