MIKE F. - NO.... No mistaking the Chevy dist. wrench, was like this, http://www.autozone.com/autozone/accessories/Duralast-2-pcs-distributor-clamp-wrench-set/_/N-255s?itemIdentifier=914110_0_0_
Both ends may have been 9/16ths. Last tune-up I did on my '70 307 powered Nova was in 1975. It fit the bolt to loosen the distributor, that's all I cared about.
Wish I'd kept ALL of Dad's tune-up stuff. Tach/dwell meter, remote start switch, Delco points adjusting screwdriver, etc. etc. etc.
Both ends may have been 9/16ths. Last tune-up I did on my '70 307 powered Nova was in 1975. It fit the bolt to loosen the distributor, that's all I cared about.
Wish I'd kept ALL of Dad's tune-up stuff. Tach/dwell meter, remote start switch, Delco points adjusting screwdriver, etc. etc. etc.