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Discussion Starter · #1 ·
I am about to invest in building a 9" rearend for both street as well as open track events. Currently, my 67 Mustang has an old tired, leaky 9" rearend with the small-sized bearings, 28 spline axles (non-tapered) and 3.00 open gears.

-Is there any difference in durability and/or performance between the small bearing vs the large bearing axles?

-Since I plan to drive this car in open track events, should I step up to 31 spline axles when I'm building the new rearend?

-Does anyone out there run a Detroit SofLocker? If yes, does the SofLocker really make less noise than the original Detroit Locker?
Quote from the Detroit Locker website: "The Detroit SofLocker employs a pre-load spring pack to keep the drive and driven members engaged and dampens this noise. The pre-load does not affect the speed differentiation function when required while turning corners. The Detroit SofLocker provides the same performance of the Detroit Locker with reduced noise." hhhmm?

The bottom line is... I want to build a rearend that can handle the abuse, but if it's really not necessary, why overbuild?

Thanks for your opinions,


ps: here's some engine & trans info (if you want it):
351w (425hp / 400 ft lbs)
T5 w/G-Force gear set
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