That should be a 10 to 1 or better motor. Unless you are making lots of power, the small journal, 2-bolt engines were very tough. I beat the hell out of them on the street, and the only one I ever broke, ran out of oil. (2 rods through the block and pan) Chevy used this combo for up to 375 HP for years.

Check the number stamped on the top of the block in front of the passenger head. The letters at the end of the number will tell the story.