r 600 rear axle swap

[mackr1989]

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we have an 88 r600 single axle dump with a 23k rear axle. id like to install the heaviest available. what would that be and where can i find one. distance doesnt matter.

[doubleclutchinweasel]

Pretty sure there was a 28K.

[Joe Ditchkus]

I know Rockwell made a 29,000 lb.single axle rear. If you can find an old New York State Brockway single axle plow truck quite a few had them. There is one in my Brockway plow truck. Joe D.

[6368]

You could get 30000 lb mack rear which looks just like the single axle verision of the 58000 lb tandem. I don't know if they had a single axle version of the 65000 lb tandemRA30Single.pdf

[doubleclutchinweasel]

There you go! That would be the ticket!

[mackr1989]

I can't find one used and I don't think a new axle from mack will fit will it?

[6368]

i saw one in the junkyard about six months ago. called about it today... already gone but they come around every so often. what ratio do you want. i would think you could get the whole cutoff for around $1500.

[mackr1989]

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i found a 29k axle today. along with the axle also comes springs and brakes but it doesnt have any gears in the differential. truck has a 250 with 6 speed low hole. i need to have gears installed in the differential but dont know what i want for a ratio. its a 6 wheeler thats going to carry loads in its 12 foot body and pull a 20 ton tag. what would a good ratio be?

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[6368]

that depends on what size tires you want to run. If it was mine i would run 4.17 with 22.5s or 4.42 with with 24.5s.

[mackr1989]

It's has 6 new 22.5s

[masterwelder]

You're going to upgrade your axle and loose it on the 22.5 rubber. Better go with the 24.5 rubber.

[6368]

315s with 4.42

[blackdog2]

top or front loader?

[mackr1989]

Front loader