Dont run it, the crank snouts are not threaded, and the balancer is not retained but it is a good idea to do so.

Contact these guys to get the kit to drill/tap the crank in the vehicle, it is really good insurance.

https://www.12bolt.com/

https://www.12bolt.com/store/p164/C...83-327-250-235-261-230-215-194-Tool.html

In the mean time find yourself a new balancer.

Steve

Last edited by sstock; 06/09/2019 2:57 PM.

1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration