Will a 54A blade fit a 140??

Here is a pic of my unit Hugh. I see what you are saying about the pitch of the blade on a high tractor such as mine. Seems like modifying the hardware would require less time and materials than making my own (which I have parts for), but you make darn good point.
If the blade is too narrow, then the snow will fall around the tires during a pass. I think that for that reason alone, I'll just take the blade and frame I have, and cut the blade to 72", making my own.
the likelihood of finding the perfect IH factory blade for my unit is pretty slim. Thanks
Dave

Having said all of the above, those IH blades all designate two criteria in the model, that being the number indicates width of blade and the letter indicates tractor it fits as in letter series. Any blade designated A will bolt up to a A, SA, 100, 130 or 140. And yes the mounting hardware would have to be different for a Cub, but don't rule out reversing of the same mounting hardware.

Those blades started at 54", followed by 60", 72" and 84", and quite possibly 96", not certain on that last one. The blade design was the same on all of them, just the fabrication material got heavier. IH always suggested the A-60 for SA, 100, 130 or 140. I had one of those blades and sold it for two reasons; the push frame is not heavy enough to withstand what the SA, 100, 130 or 140 can dish out. That will be even worse if you have 36" tires on rear. Second factor, a 60" blade is not wide enough for these tractors, thus one finds himself pushing snow and having snow fall in around wheels. This can get one in a lot of trouble, finding yourself bogged in snow worse than if you have no blade.

I sold my A-60 blade and built one of my own fabrication. It is a 72" angle blade and the push frame is probably 5 times heavier than the A-60. There were a few minor items I had to beef up on my blade, however since doing that I've used it trouble free for several years now. Back when I had the A-60 blade I was giving consideration to mounting pto driven welder on back for ballast and daily welding chore.

I you want a photo of a blade that can withstand anything these tractors can dish out plus bolted to the tractor in enough locations to protect tractor castings, send me an e mail, and I will return photos.

He says a blade for an A would fit a Cub with some spacers, but that a Cub blade would not fit an A, or a 140. Dadgummit!
Dave