73 and 74 SD Blocks are identical other than date codes.
The service replacement is the same but the date code could be anywhere. Mine is J197 so they were made at least up until 77.
Price would depend on how complete it is as if you have to replace items like heads, intake carb or distrubutor they will cost you.
It should have SR 81890 stamped down bottom of the block front left side.
Block should be Vinless
Sent from my SM-G930F using Tapatalk
|