I'm new to this page but I'm having a hard time figuring this out
My truck is a 93 fla
12.7 Detroit
On the truck right now is a regular 10 speed
Rtx12610b
3:90 rear ends
The original transmission was a
Super 10 rtlo14610a
Someone is saling me a super 10
Rtlo16610b
My question is which transmission is the best for my truck ?
Just a little more info I pull a step deck in Florida with a about 47k in cargo looking for my truck to feel little faster n to get a good fuel mileage
Super 10 for a 3:90 rear ends?
Discussion in 'Ask An Owner Operator' started by 93fla, Aug 27, 2019.
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Some guys will argue but when I first joined this forum. Super 10's were the HATE.
I had one. It was in such bad shape. It kept blowing out rear ends.
Another one I drove. Locally. Kept locking the truck up every time I tried to use reverse.
Mechanics were always fixing that one.
They seem to be indestructible though. Even if they don't work good. -
I do not care for 10 spd's at all, but I would rather have a regular 10 than a super 10 anyday, BUT, that tranny you have in there is a light duty, at least the one you are looking at is the heavier torque rating, but I doubt it gives the truck more power.
You need to check and see what the difference in the ratios are though before you do a switch and make sure that is what you want. -
Go to the Eaton website and look at the gear ratios between the ABC models of the Transmissions you're looking at.
For example that rtlo 14610a has a low gear that it's only 10 .02. I had two Freightliner both that came from the factory with 12.7 Detroit and the C ratio Transmissions. The C ratio transmission gives you a much lower low gear of 12.80.
Check the ratio charts and see what transmission would be better for you.
Ratiodirthaller Thanks this. -
Running Florida,with 390 gears, I would want all the overdrive I could get.
FlaSwampRat Thanks this. -
Ok I look on the Eaton's website n this is what I got
Rtx12610 final drive is 0.78
Rtlo14610a final drive is 0.75
Rtlo16610b final drive is 0.74
Correct me if I'm wrong but the lower the number = lower rpms in 10 speed?
N thanks for all the replies -
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I always tell everyone not to waste money upgrading a transmission unless it’s a RTLO 13 or 18 speed
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dirthaller Thanks this.
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Depending on where you are traveling you may even want a double Overdrive.
Are they still available?
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