T-36 Iron Fireman Snow Tractor help wanted

[gordon]

Well I'm thinking that the raditor in a WC55 would be working hard lugging all that metal around, so they may have used a slightly thicker core for extra heat dissipation?

I can't think of any other reason why they would specify the radiator code from a WC55 ( G-121 ) and not just an ordinary 3/4 ton ( G-502 )

I know the forest Service had something to do with the earlier Sno-Motors and that may well have run into the Snow Cruiser and Snow Tractor too.

Ah well, more findings as and when.
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Late

I think I've identified the radiator issue.

The radiator core is the same as the standard WC 3/4 ton, but the radiator cap isn't that is the specific WC55 part. The cap part number doesn't match the ordinary 3/4 ton for the system with or without the overflow tank, so all I can think is different pressure rating maybe.