i hav a 69 olds cutlass suprememe. When we bought it i assumed the engine was the same. Unortunately I dont think thats the case. The number castkeded on the engine is 557752-3b. I checked a few internet searches and it comes up as a 77-80 350. I figured you guys here would know if thats true or not. Please let me know.

Thanks

 

In my best Madeline Kahn voice: "It's twue, it's twue..."

Yes, your engine has been replaced at some point.

 

As always I knew someone here could help .. Thanks