According to my Chilton manual, an "E" suffix is for a 1957 model passenger car 283. Check the bore size- - - -a 265 should have a 3 3/4" bore, while 283's were 3 7/8". Also, a 55 model 265 will NOT have a block-mounted oil filter; they used the same remote filter as the 235's. The first V-8 with a block-mounted full flow filter was the 56 model 265. 55 model 265's should have a G or F suffix, at least in the passemger cars. I don't have a reference on the early trucks.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!