The size for bias plys?

[327power]

What was the stock size tire for a 1973 C10 shortbox with bias plys? It's for a restoration and radials won't do because there just too round and bulbous and don't look right. Thanks!

[got2haul]

Here's a link to showroom brochures for our trucks.  On the last page of each year, you can find the specs.  Some years listed the tire sizes.

http://brochures.slosh.com/

[Captkaos]

They were G78-15B, but...