Quote:
Originally Posted by Jack Shaft
Power assisted brakes and automatic transmissions do not improve engine efficiency, precise timing at all rpm ranges of operation offered by a mechanical advance distributor does.. perhaps this is why Ford engineering adopted it with the 'New and Improved' 4 cylinder of 1932..
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John, what was the speed difference between the Model-A and Model-B? One is 60 and one is 85 mph. More RPMs to accomplish this. Higher RPMs require more total timing.