What is value of 1956 Chevy truck?

That depends on the condition. Is it "numbers matching"? Every vehicle has a VIN (Vehicle Identification Number) that decodes everything about it! For instance, a 1965-74 Chevelle has a '138' as the first numbers. This indicates it has a '396' cubic inch motor. I do not know what VIN a '56 Chevy truck has. However, google the VIN on

it and you'll get lots of info!!

Usually an old unrestored vehicle is worth more. There are exceptions to this 'rule'!