I bought a book off E-bay that may do you some good. Its call, 1937 Chevrolet Engineering Features. It has all the '37 specs along with the '36. I believe it was for salesman to study so he new what he was selling. They compare the new 37 to the old 36. Lots of 37 pictures. 195 pages
Its a new reproduction and was $19 at,
Crank'in Hope Reproductions
(412)-459-8853
I think you can still get them off E-bay. I "bought It Now". Joe