[mud.man.rj]

The truck I am working on has a 3spd also with a 400 small block so changing to an auto should only need crossmenber, but I know from one I did in the past that I needed to have it shift to 4th gear electrically, either with a toggle switch or by rewiring the trans solonoids internally which I did at the time but found out that only the earlier ones could be converted internally not the later ones. So I thought there may be some kind of harness you could purchase but haven't looked into it much yet as am just rebuilding the 400 right now then lowering it with spindles/spring cut and spring and c.notch to the rear first before I get back to the powertrain. Maybe someone will pipe in and help out on this site. Hoping. Thanks.