The Ford Barn - View Single Post

rockfla · 04-16-2020, 09:15 AM

I'm not sure that info was available that far back??? IF anyone would know I suspect that DavidG or Kube would if they chime in. Based on the torque value of the head nuts at/or around 50 to 55 ft lbs I would suspect that it would be at least -OR- "similar" to what we use commercially called "B7" which is a "heat treated" chromoly 4140 steel, which is C35 (OR around that value at least). Just my theory!!!!

04-16-2020, 09:15 AM	#2
rockfla Senior Member Join Date: Mar 2014 Location: Jacksonville FL Posts: 3,952	Re: Rockwell of Ford head stud nuts I'm not sure that info was available that far back??? IF anyone would know I suspect that DavidG or Kube would if they chime in. Based on the torque value of the head nuts at/or around 50 to 55 ft lbs I would suspect that it would be at least -OR- "similar" to what we use commercially called "B7" which is a "heat treated" chromoly 4140 steel, which is C35 (OR around that value at least). Just my theory!!!!