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| | | | Joined: Dec 2011 Posts: 110 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2011 Posts: 110 | My `58 1/2 ton has a 3 speed on the column and I'm thinking of putting an OE 4 speed floor shifter in it. Will it change my final drive ratio? Or is high gear in both the same?
1959 Shortbed stepside 1/2 ton project ![[Linked Image from i236.photobucket.com]](http://i236.photobucket.com/albums/ff117/olddaze/Chevy%20truck%20project/photobucket-4342-1325944221019.jpg) ![[Linked Image from i236.photobucket.com]](http://i236.photobucket.com/albums/ff117/olddaze/Chevy%20truck%20project/20131020_154946.jpg) | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | High gear is the same, 1:1.
Bill Burmeister
| | | | | Joined: Dec 2011 Posts: 110 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2011 Posts: 110 | In that case I'll stick with the 3 on the tree. That way MaMa can sit alittle closer.
1959 Shortbed stepside 1/2 ton project | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | If you're wanting to get a bit more speed (or more accuratly, lower rpm at higher speeds), you might look into a 3 speed with the Borg-Warner overdrive. That will keep the column shoft, but get you a .70:1 overdrive ratio. The overdrive unit itself is more of secondary 2 speed transmission, so you would have not only the overdrive gear, but also a split gear between 2nd and 3rd (great hillclimbing gear, BTW). That version of the 3 speed is a direct bolt in, only really needing a lockout cable, a solenoid, a kickdown switch, and the wiring harness to install. The '55-'57 Passenger version is identical to the Truck version '55-'59.
Bill Burmeister
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