360 marine cranks?
The thing to get an engine to run reverse is the cam and some cases cam drive, distributor, water pump and accessories like generator. Chev trucks used to have a BB TRUCK setup that was normal rotation engine, but the cam rotated backwards because of a 2-gear drive.
Reverse Mopars should have a big tall thrust device under the distributor to take care of that as the drive gear tries to ride up. Normally Mopar reverse marine engines use a timing chain but a revers ground cam. Only thing to worry about on the crank is IF the striations on the crank oil seal area go wrong way.
This here is 440, but SB used the same type of device
The thing to get an engine to run reverse is the cam and some cases cam drive, distributor, water pump and accessories like generator. Chev trucks used to have a BB TRUCK setup that was normal rotation engine, but the cam rotated backwards because of a 2-gear drive.
Reverse Mopars should have a big tall thrust device under the distributor to take care of that as the drive gear tries to ride up. Normally Mopar reverse marine engines use a timing chain but a revers ground cam. Only thing to worry about on the crank is IF the striations on the crank oil seal area go wrong way.
This here is 440, but SB used the same type of device
