I might have a chance to trade for a 64 C-10. Owner says that it has a 250 cu in motor and granny 4 speed. From what I've researched so far, the 250's were in a 66, but not 64. No real worries there since it'll be something to play with and I'm not looking for a show truck. My biggest question so far is how they run on the highway with the 4 speed and 250 engine. Any ideas on the stock gearing for a 64?
