Can\'t find out what engine I am looking to buy a 82 blazer 4x4 that is for sale at a used car lot not to far away. I want to make sure that i get one with a 350 cause i want to run 35's. The salesman says that he knows that the blazer originally had a 305, but the motor was replacement about three years ago with a rebuild Fliteline motor. He has the receipt from the shop that says its a flightline, but doesn't say which one. I know that the casting number can tell you the model, but the only nuber i found was in the center of the motor at the very back were it meets the trans. The number is 14038651, but i can't find that number online any where. That might not be the right number, but i only had just a sec to look, the lot was closing in 3 minutes. I tried to look for the vin# under the alternator, but i could see anything, again i was really rushed. Can anyone help me out, will a fliteline motor have the same casting numbers? I need help, i am really new to the whole K5 scene, heck i am new to the v-8 scene altogether.