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V8 Bob · 06-16-2021, 02:46 PM

Just some additional info on '49-up single point Ford V8 dwell. Ford used point dwell contact percent of 58-63 from '49 until '55-'56, based on shop manuals on hand. To convert percent to degrees, simply multiply percent numbers by 45, the total allowed degrees per cylinder (360/8=45). So, 58% would be 26.1, and 63% is 28.35. The mean average is 27.2, or 27, what I refer to as a "target" dwell.
The 27 degrees dwell spec applies to other Ford V8 engines as well, including the Y, FE, MEL, Super Duty, Windsor, Cleveland, and 385.

I thought about starting a new thread but hope this info fits into this discussion.

06-16-2021, 02:46 PM	#13
V8 Bob Senior Member Join Date: May 2010 Location: Granger (Northern) Indiana Posts: 1,520	Re: point gap = dwell Just some additional info on '49-up single point Ford V8 dwell. Ford used point dwell contact percent of 58-63 from '49 until '55-'56, based on shop manuals on hand. To convert percent to degrees, simply multiply percent numbers by 45, the total allowed degrees per cylinder (360/8=45). So, 58% would be 26.1, and 63% is 28.35. The mean average is 27.2, or 27, what I refer to as a "target" dwell. The 27 degrees dwell spec applies to other Ford V8 engines as well, including the Y, FE, MEL, Super Duty, Windsor, Cleveland, and 385. I thought about starting a new thread but hope this info fits into this discussion. Last edited by V8 Bob; 06-18-2021 at 08:44 AM.