It could also be a 1957 265 V8. That year they have the same casting number. The stamp code on the front passenger bank will tell you the original application if it hasn't been removed during a rebuild. The only other way to tell would be the bore diameter; 3.75" for the 265 and 3.875" for the 283.


1957 Chevy 3200
1971 Jeep CJ-5
1983 Chevy K-10