99 LS1 with Th400
Thread Starter
Teching In
Joined: Oct 2003
Posts: 45
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From: Columbia,SC
99 LS1 with Th400 I have a 99 LS1 with a Th400/3500 and 3.42's. My problom is that my car feels like it has no gear in it. I was wanting to know what gear i should put in it. (4.10's or 3.73's)
Re: 99 LS1 with Th400 Hey bro, I have a '99 LS1 with a Turbo 400 w/3.42's also, only diff is I have a 4000 stall, and mine feels and runs great! Don't know why urs feels like it has no gear? 
Also, what first gear you got? I got the 2.75 first gear, might make a diff there, but the other two gears are the same, so I don't know
Also, what first gear you got? I got the 2.75 first gear, might make a diff there, but the other two gears are the same, so I don't know 
