Quote:
Originally Posted by jergarr
I have the 3.91's in my L99 and I wish I had done them sooner. My only real complaint is the higher rpm's on the highway can get annyoung at times but that's the trade off. I ran a 12.4 1/4 mile with 1.85 60' this past fall. At the moment I do plan on going with an aftermarket cam in the next year but the gears by themselves are a good mod.
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Did you track it before your 12.4 et. I'm wondering how the 391s will help my et and 60ft. Thanks