Your tuner should be able to program in your overall wheel diameter and rear end gear, so as to make the transmission do what your car expects, rather than whatever the original program for the engine/transmission was intended to do. With HP Tuners or something similar, your tuner (or you) should be able to work this out quickly by correcting a few basic parameters, unless there is an ABS-related glitch, which may require further investigation. On a side note, with an LS3, you should still be able to burn those tires taking off in second gear; you might be in third.
Someone else here should have something more enlightening, but most on here are focused on the manually shifted side of things.
Quote:
Originally Posted by Rocketw19
I have a 62 impala with an LS3 and matching 6L80 trans hooked up to 377 gears. The car seems like it is launching in 2nd gear. I have almost 500hp and the tires will not brake loose. if I am anywhere other than taking off the car pulls very hard.
I just changed to 377s as I though my gearing was wrong so now I am thinking its something else. My tuner is going to look at the tuning of trans next week but I am impatient I want answers now, lol. I am running 22" wheels in back on 285 tires so they are tall but something is not right.
I found this forum looking for frame info (frame is next)but seen this section and lots of good reply's so decided why not give it a try maybe one of you had this happen before and its an easy fix?
thank you for your time.
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