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dozerman1

Changing a Mack transmission to a fuller

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Anyone have any idea what it would take to change a Mack T2070 transmission to a 9 or13 speed fuller.Driver ran transmission low of oil and it can be repaired but I have never really liked it.I think giving the truck a few more years would do wonders for it.Any thoughts anyone or advice?

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Just remember when comparing an overdrive Fuller to an overdrive Mack transmission, the fuller will have a less "overdrivey" tall gear. I hope that makes sense, my mind is shot from holiday stress. There will also be a difference in drive shaft length.

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I believe you need to change bell housing as well and I think pilot bearing is different between the two also I have a mack to fuller/Eaton bell housing here if you need one

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Possible bell housing, trans mounts, the way the clutch cable attaches, length of trans (shorten or lengthing drive shaft) speedo hookup, final output ratio of transmission ( rear gearing change) shift lever.

I've done it. It's worth the effort if you do you homework. Best way is to get the doner trans from a mack, preferably around the same year. I'm getting ready to get rid of the mack 9sp for a fuller. My mack has a .71 final drive ratio with 5.55 rears so any swap I make will also require a rear change to get any road speed with a decent rpm.

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You will have to change rear ends too, a 2070 runs about 5.50 rears.

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T2070 has quite fast owerdrive, 0.60. Much faster than T2090, T2100 and T2130.

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T2070 has quite fast owerdrive, 0.60. Much faster than T2090, T2100 and T2130.

I did not know that, I thought Mack overdrives were all the same. 0.60 thats a hell of an overdrive!

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It would be hell at the parts desk too. They look up everything by the VIN. If you use something else, they won't be able to find it.

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