I can't honestly answer your question but I did notice that the temp guage goes to 220 and the oil guage to 60lbs. Was that "standard" on the 51? Chev guages did not got that high in 1951....or I don't think so?
My 1952 Chev panel truck has brown face with white needle so maybe someone put 52 guages in your truck. I don't think GMC would have done it that early in the year?
I also noticed the speedometer goes to 80mph which is probably correct. I'm not sure about GMC but the chevy was 80 until 1952 when it went to 90mph.
A lot could have been changed out in the past 50 years.
Lets see what the experts say when they get here!!
Last edited by Achipmunk; 12/01/2008 1:30 AM.