I found this in my operators manual for my '49:
Transmission Ratios
3-Speed 4
Speed
First (low).............................2.94 to 1 7.06
to 1
Second.................................1.68 to 1 3.58 to
1
Third.....................................Direct
1.71 to 1
Fourth...................................
Direct
Reverse.................................2.94 to 1 6.78 to
1
Rear Axle Ratios
1/2 Ton................................4.11 to 1
3/4 Ton................................4.57 to 1
Brad Rusnak
b_rusnak@telusplanet.net
1949 Chev 1/2 Ton Deluxe Cab
----- Original Message -----
From: "Ryan Langford" <rlangford@attbi.com>
To: "trucks" <oletrucks@autox.team.net>
Sent: Tuesday, August 27, 2002 9:39 PM
Subject: Re: [oletrucks] survey of high-speed options
> This is probably overkill, but if you wish to play with the
> different ratio's and tire sizes to get an idea of what
> RPM you'll run at a given speed, I created a html/javascript
> program (no downloading necessary, just any browser
> that is javascript capable) for such calculations a couple
> years ago. Its original intent was motorcycles,
> but has all the data points to easily be used for cars
> or trucks. The only difficulty is you have to know the
> tranny gear ratio's, and make an educated guess on
> the tire circumference. (diameter times pi, many
> tire web pages offer diameter of all the tire sizes, such as
> www.tirerack.com). I know I would be interested
> if anyone has the data for the 4 speed and 3 speed
> gear ratios.....
>
> Here's my program;
>
> http://home.attbi.com/~rlangford/javascript/ratio.htm
>
> Have fun.
>
> Ryan
> rlangford@attbi.com
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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