Highway speeds

[SirWinston]

Hi all, I have a 1960 Willys truck with dana 53 rear axle. looking for best way to increase speed. gear swap/warn overdrive? What gears should I run in the dana 53. I would not run the front axle. Thanks

[bmorgil]

I think by far the quickest and easiest way is with an overdrive. This also allows you to keep the low ratios.

[SirWinston]

Thanks for a reply, any chance you know how many mph this over drive would give me? Thanks

[bmorgil]

Use this link to a calculator to figure what will be happening exactly. Use your overdrive ratio as third gear. (i.e. .75 with a Saturn from KW)

https://willysjeepforum.kaiserwillys.com/showthread.php?2283-How-fast-is-the-RPM-at-speed-or-the-speed-at-RPM

In general it is like one more "gear" or "shift". it bumps you up about 10 - 15 MPH at the same speed. So if it was comfortable at 40 it will now be good at 50 - 55. If it is the Saturn from KW, it is a 25% overdrive so just tack on 25% to you current speeds.

[LarrBeard]

"So if it was comfortable at 40 it will now be good at 50 - 55 ..."

We have been having a number of conversations lately about "How fast..?".. In BMorgil's response, I am assuming that "comfortable" means engine RPM and stress - not necessarily how well it will drive and handle at 25% overdrive.

We don't want to get into "Hey y'all, watch this" type of situations."

[TJones]

We don't want to get into "Hey y'all, watch this" type of situations."[/QUOTE]


Is that anything like “Hey y’all watch this and hold my beer”???
Larrbeard :):)

[bmorgil]

"So if it was comfortable at 40 it will now be good at 50 - 55 ..."

We have been having a number of conversations lately about "How fast..?".. In BMorgil's response, I am assuming that "comfortable" means engine RPM and stress - not necessarily how well it will drive and handle at 25% overdrive"

Excellent clarification Larry!