The timing curve spreadsheet can be used by those interested in improving engine performance by improving initial timing, centrifugal advance, and vacuum advance all controlled by their distributor components.
Whether your distributor is worn and needs new components or just needs updating of springs, vacuum can, or initial timing you first study your existing curves and compare to stock and recommended curves to find the way to improve your engine performance when using today’s gasoline’s at the location where your car spends most of it’s travels.
The attached spreadsheet is for a slant six that evolved at Chrysler over a period of almost 30 years thru different curves while Chrysler sought out the best for the changing conditions.
The slant formula is to increase the initial timing while decreasing the centrifugal advance rate and amount…..among other improvements over time.
We will spend more time on this at a later date but know that the flathead six also can benefit from such an effort.
So if you have access to Microsoft excel have a go at it just to see how it works.
The is more info on this subject at the slantsix.org site such as at
http://www.slantsix.org/forum/viewtopic.php?p=280242&highlight=timing+curve+spreadsheet#280242
The above spreadsheet is where the 65 Dart Slant Six is operating as well as a recommendation from a well recognized Slant Six rebuilder whose handle at the slantsix.org site is “DOC”.
This posting was published in response to Kevin’s 8/12/2016 comment and request for the info and spreadsheet.
We’ll spend some time later disassembling a flathead & slant six distributor later to get into using the above info to “tune up” a distributor to get some more power out of your engine while using today’s fuels.