Nick40B

yep all the housings are incorrect. front is stamped 8.24 rear is 5.01. The actual ratios are 4.17. Having fun over here

have counted the teeth. 5.17 ratios. no idea what tyres it had. currently rebuilding the forward drive axle. Bevel pinion has exploded.

I suspect the gear sets have been changed. Front diff carrier housing is stamped 8.24. Rear is 5.14 or so, however it sits on 100kmh happily in top cog around 1700 odd rpm lots going on with this truck

I’ve since removed the chrome caps. But yes it look exactly like that. My parts guy believes it’s had a rear end swap from 34k-44k 10 leaf pack the diffs have 8.24 ratio stamped on the front of the carrier housing

I’ll attach some old photos. Unsure on full history of the truck

Hi all Im new to BMT, recently joined I’ve sent my vin to mack and they’ve come back saying it’s a 1979 R685RST. can someone confirm what engine/gearbox and rear end these came with from factory? From what I’ve seen it should have the maxidyne engine. It has a maxi dyne sticker on the dash yet has econodyne on both sides of the bonnet southwest qld, Australia