4300# and no low-end torque (archive)

Actually the LSD is only about 30% effective anyway, due to the clutchtype unit that they use. This is a really good design since full LSD is a problem on icy roads and open diffs just don't have the straightline acceleration. The downside is with a partial LSD like these that if one drive wheel is placed in a bind, it cannot receive full torque like a typical "locking differential".

I would say that the lack of wheelspin on dry pavement is due to the combination of a heavy car (with a comparatively heavy rear weight bias - 50/50 plus weightshift), low numerical gearing, low stall converter, and an under abundance of low end torque.

It makes for an interesting comparison - I have a 96 Impala SS and have run both cars (with a friend) at the local airstrip off hours. The Impala will brutalize the 750 out of the hole (tremendous wheelspin and all) and up to about 70 MPH, by as much as 3 lengths. Then the 750 catches up and passes at about 100 and keeps pulling away until by 120 (out of asphalt) it is 4 lengths ahead and gaining.

Both are similiar in weight, gearing (3.42 vs. 3.15) and have roughly the same quartermile times Impala - 14.80s, 750 - 15.00s at around 90-95 mph, but radically different performance characteristics. Conclusion - the 750 is not a dragster. Treat as such. Rolling start races only.

FWIW, S-

ps. my wife's Regal GS will blast either one, and it's front wheel drive. aarrgghhh !!

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