many years ago I had a tired 56 Ford with the old 292ci V8 which had the 12volt system (1st year for the 12volt) I installed a 55 Ford starter (last year for the 6volt system) when you turned the key that engine cranked real fast and started quick. I never had any problem burning it up, I suppose if it would have had to crank for a long time it might have been a different story.