[Ol' Ron]

I agree with Jim the 11A is definately the best distributor available for the pre 49 engines. They get even better when converted to electronic. However I do thing the advance curve could be improved and that's one of my projects. It's quite simple:
Lighten the springs by grinding them down enough toge all the advance in by 2000.
and lengthen the advance slot to 28 degrees. Unfortunately thid depends on the vacuum brake doing it's job.
I discovered that my stock test engine has a broken area in the exhaust port under the front blind hole. Not sure how to fix this with the equipement I have and with out dissembling the engine. Today ewe installed the radiator and added water . After start up the drivers side exhaust looked like a fire hose.
This is very depressing and I will have to reevaluate my test schedule. Might have to go to the 280 now. I was hoping to have the truck running in a few weeks to work out all the bugs.