I’d like to regear the ol turd, I mean Ford, for better climbing but I don’t want to give up my fuel economy. Way back once I saw a guy fitted a brownie transmission to his Ram 3500 and I was wondering if anyone on the board here could point me in the right direction:
1. where to buy one
2. Are they universal?
3. How to install one
Thanks y’all hope you’re staying busy out there
edit: I found out the other day the previous owner had an Allison MT643 swapped in. OEM Ford 9inch rear end
Anyone here familiar with “brownie” transmissions?
Discussion in 'Expediter and Hot Shot Trucking Forum' started by rccarlson22, Oct 6, 2021.
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Those Transmissions are from older trucks. They are not all the same.
I think the number you would be looking for is a Spicer 5841, but even at that they had different models I think ABCD that had different ratios. I can't remember I think it's the B or C model that has the correct ratios for low direct and overdrive so that you can split it while you actually are driving. And I think one has a better Overdrive.
Also maybe someone else could answer this better, but I'm not certain all the parts are available even to rebuild them nowadays.
Couldn't tell you where to buy them you have to Google and do some research. Scrap yards that have older stuff might have them.
I don't know what they have but I think Fuller has some auxiliary Transmissions but I'm not sure what their applications are and their prices are probably pretty expensive.rccarlson22 Thanks this. -
Thank you for the info, I’ve found a few for sale online. I’d prefer to buy it in person tho.
I’m definitely going to have to do some custom driveshaft work to get it on, but it’s very doable. I’ll post an update once I’m getting around to installing -
I think some may not even be Overdrive.rccarlson22 Thanks this. -
What your going to run into is rotating mass. What you think your going to gain you will loose in turning the 2nd box.
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the one I had found is a 3 speed. 20% underdrive, direct drive, and 20% overdrivewore out Thanks this. -
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I may be wrong, here’s a pic of the plate. All I can tell for sure is 4.33 gearsBigBob410 Thanks this.
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