Re: Replacing standard gearbox with an overdrive gearbox 1948 22nd Series

Posted by 39SixSedanMan On 2010/8/4 12:26:02

Michael,
I ownd a 39 six that originally had no over drive; however, 39 was the first year Packard offered an OD, but the only year for the R6/7 asd in 1940 the R9 was offered. I found an R9 and it bolted right in (as mentioned by others)> I needed to extend a hole on the frame X member to allow the solonoid to have room, but I think the 48's accomodate the OD as is.

Now that I have the system, I would now never want to go without it. It is a pleasant and well performing system. My only wish is that the engagement speed would be a bit higher, but it is not bad.

As others have mentioned, the function of the electricals is accomplished differently between the R9 and R11, and the R11 is definitely simpler. I was fortunate to find a system with all the items needed and perhaps more fortunate to have found some spare items at swap meets. With that said, I would state that both are very reliable and provide a great ride.

What I don't know is if there are any Right/Left Hand drive implications. I would still say it is worth the effort.

Pat