well i had to use robust because they are the "little axle that could" materials used were excellent and QA was good
perfect low loss axle for hemi 6 and slant 6 racers. light weight, easy to turn big thick ring gear everything from spool through locker to clutch cone and torsen centres
25 28 and 31 spline shafts
borgwarner design, the later ones used same 28spline as some of the ford 9 inch units
apart from the axle tubes occasionally coming off, when drag raced to death, they tend to live longer than their diminutive size would suggest.
the cone LSD centre was cast steel in some cases rather than nodular iron...!
they tried hard... :)
2.77:1 4 pinion cone based LSD used behind the 727/360 combo in the luxury cars
ford ran em behind 6 and small block v8
2 litre turbo skyline
4 litre TVR
4 litre morgan
v8 firebird and IROC Z
basically just about everything in Oz and SA used a borg warner M series axle
m75 7 1/2 M78 7. 8 inch
i've got Moser axles and true track style centre in mine... :) and it would fit under the rear end of a pre 68 B body due to Aussie A body rear end width after 1971
obviously NOT 8 3/4 strong but very much better than a 7 1/4
they did an M88, sounds great, 8.8 inch ring gear, and fits an A body just a rare thing and you can't get parts.
all now little known products of Spicer Axle Australia/Dana Corp.
