ford 9 inch drop out iron vs. aluminum

[chrisrobinson85]

What about case deflection with the ring and pinion? I don't want to have to put new gears in it after each season.

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[racer56]

What about case deflection with the ring and pinion? I don't want to have to put new gears in it after each season.

Get one with a load bolt.

[partybarge_pilot]

Gear deflection is mostly in the spool and ring gear, Hence the load bolt in the case to limit it...........

[heman]

I was told to stay away from aluminum third members for offroad racing!!!

[CRAIG_HALL]

Quite a few short course trucks run the strange aluminum case, not the OEM style but the larger bearing unit. "ultra case" I think. I can only think of the mileage being the reason they can run it yet not desert trucks.