Opinions wanted: worthwhile to go from 3.05 to 3.29 gearing?
Based on my research, I could go from current 3.05 (non-HD) gears to 3.29 (non-HD) in the '98 LeSabre by swapping in a differential and sun gear from a 3.29 W-Body (or 2.86 H-Body) and a 2.86 H-Body half axle.
(This works because the drive/driven sprockets on my transaxle are 35/35 (like a Grand Prix GT), rather than 33/37 like a 2.86 Bonneville.)
If I go with used parts from reputable supplier(*), it looks like I could do this for around $200.
I can reprogram the PCM'* tranny parameters with the PowrTuner.
So here'* where I need your opinions:
From a performance standpoint, is this swap (especially the labor :P ) worthwhile?
2004 Buick Lesabre Limited, Gran Touring; Bone Stock
1998 Buick Lesabre Limited, Gran Touring; Mods: Poly sway bushings/endlinks, Tru-Cool trans cooler, Thrasher shift kit (med), PLIM, front PEM; Mods in progress: Alot of stuff, but slowly...