TorqueFlite Question

Are there any options for a slant other than the stock tranny. I'd be nice to have an overdrive for the highway.

None in an automatic that I’m aware of. I’m not really a slant 6 guy though so maybe there’s some kind of conversion out there I’m not aware of.

If you use a slant bell housing you can use an 833OD 4 speed manual where 4th is a .71 or .73 overdrive gear. Here’s some info on the 833OD’s

4 Speed Transmissions transmission

Your other option would be to add a gear vendors overdrive behind the 904.