Kts68,
I've installed high speed gears from ORF Corporation in a '32 and have had excellent results. The documentation with the gear set is excellent, offering a step by step approach to replacing and setting up the new gear set.
This link shows another option, an overdrive unit from Gear Vendors. IMHO an excellent quality compact unit.
packardinfo.com/xoops/html/modules/newbb ... orum=1&post_id=70708#forumpost70708 I also have an Excel spreadsheet where you can type in your tire diameter and gear ratio and compare engine rpm's. PM me if you want a copy.
A few pictures of the GV unit, the custom drive shafts I had made and the frame for mounting the GV unit to the "X" frame. I also designed a 4140 chrome moly flange that would accept modern 1350 universal joints and mate directly to the Packard transmission and differential flange.
Regards,
Dave
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