you'll find the engines listed in the 57 owners booklet and in the 57 shop manual .... as I said, the 265 was the usual for light trucks when a "V8" was ordered, if you have plates that indicate 265 equipped, then that's most likely what they were
aside from the fact that the 283 was an option for the cars and sedan delivery and the only V8 used the last part of the year, I haven't seen any paper reference yea or nay as to its availability, but we olztimers here will atest that any available item could be had on a new truck back then regardless of what it was listed for, just had to tell the dealer it's that or nothing, and pay the price listed in the master parts catalogs - might even be in the salesmans data book
Bill
