Recovered from CC yacht demo, Running take-outs were behind GM454's.
Borg Warner- Ratio is: 10-18-000-009 2.57:1 2.83:1
Have a pair with shafts and prop, if interested.
Notice: there are two or more model numbers for each ratio. Velvet Drive used different model numbers for each rotation input.
With exception to the 2.10:1 ratio you can change the pump to be used on the engine you have. Changing the front pump will have no effect on the output rotation. The transmission will do nothing if not indexed for the proper engine input rotation.
Typically Even current production model numbers are used on standard (automotive) rotation engines and odd current production model numbers are on opposite automotive rotation engines.