its over 60 since the 9" takes 4qts of fluid vs the 10 bolt holding 2. i was surprised the axles were so close in weight, the difference is null. looks like most of the rotational gains are in the ring/pinion and differential.
Looks like ill be losing 9.50# going to the spool & 4.57s. Going to call the machine shop tomorrow to try and get the gear set lightened up, Done right that should remove atleast another 2#, hopefully 3.
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1999 Z28 T-Top M6 - LS6, Bolt Ons, Suspension, MWC Narrowed 9" - 415rwhp 385rwtq 10.847 @ 125.17
1989 IROC-Z H/T M5
2006 F350 SCSB 4x4 6.0L Diesel - Studs, EGR Delete, Powermax Turbo, Extreme Tuning & Exhaust - 13.23 @ 101
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