Reverse Rotation Crankshaft Question

GM used the gear to gear cam drive. This way you can use a standard rotation cam. The crank runs "backwards" while the cam runs the "normal" direction. If the cam runs "normal" direction then the oil pump will not require a special drive gear to rotate the correct direction. Can't run an oil pump backwards. If you can find a gear to gear cam drive any motor can be reverse rotation without really changing anything else internally.

Running a motor backwards is an old short circle track trick until someone caught on. On a reverse rotation motor the engine torque tries to twist the body toward the left and not the right like a standard rotation motor.


Chuck