- Joined
- Apr 5, 2007
- Posts
- 6,356
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- 58
You can't say I have the exact same set-up cause you don't know what the first gear ratio is in my trans compared to yours. There is not one 'end all' best gear for every TH400 under the sun.
The 3.73's are way too much for the ratio I have and rather than change the trans, it's simply a matter of changing the gears. My car with 3.73's goes from 5000 to 9000 rpm in less than 1 second. No bs - no human could shift it fast enough before hitting the limiter - it's impossible. I was told even an air shifter probably couldn't make the shift in time the way it's set-up. It is 100% attributed to the gears. By switching to 3.31's, I will not only have more time in the 1-2 rpm band, but I will slow up the converter flash as well.
If the car runs much slower, than i can always put the gears back in there and look at some trans options but I think the car is going to run quicker (both 1/8 and 1/4) with the 3.31's. Perhaps my 60' may go down some but that's not going to cost me anywhere near the ET that I'm losing now from hitting the rev limter every time on the 1-2.
Everyone who watched my car will tell you that it leaves hard, nose dives and than takes off again and it's 100% due to the rev limiter. Even if my 60' gained .05 - by not hitting the limiter, my ET is going to be substantially lower than it is now regardless cause I'm seeing more et loss from the limiter than I am for a hundreth or 2 on the 60'.
All my time slips show I don't get fast until AFTER the 330'. Can't see how changing to 3.31's is going to make me 'slower'.
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. Just trying to look at all the possiblities. Your car is pretty much identical to the silver car that went a to b with no problems except ( the 3 Transmissions that had to go in it before it made it out past the lift ) for no reason. And it launched fine but had issues after that and drove normal. That's all. 3.31's are a real soft gear for the tank of a car we're racing. 
