Actually I need the back side of the AEA chart for either 1929 model 60 or 1928 model 55. I need the spark advance info. The distributors used were IGB 4006B & IGB 4006C.

Rick

Where Are You From? Fremont, California

Do You own a car built by Durant? 1929 Model 60 Roadster

Hi Rick, My chart shows the following-

IGB-4006B, Automatic advance begins at 500 RPM with max. at 20 degrees at 3,400 RPM

IGB-4006C, Automatic advance begins at 600 RPM with max. at 24 degrees at 2,800 RPM

Let me know if you need anything else.

Regards, Phil

Where Are You From? Portland, OR

Do You own a car built by Durant? 1929 Model 60

Thank you very much Phil,
That is what I was looking for.

Rick

Where Are You From? Fremont, California

Do You own a car built by Durant? 1929 Model 60 Roadster

Rick.
Don't forget we changed the profile on your cam when we reground it.
Your greatest HP now will be a few degrees advanced.
Best to tune with a dyno. Even the rear wheel type is a big help. You also could try different spark plug makes and main jets in your carb.
Zenith sells different jets for your carb.
Lance Haynes

Where Are You From? www.lancedurant.com & www.hireoldcars.com

Do You own a car built by Durant? Many