Quote:
Originally Posted by AlmondChassis
No I have not gone WOT at all I babied the car, I just notice the big difference on partial throttle nothing crazy with driving. The car is automatic unfortunately for reasons. So I wanted a more aggressive ratio it makes a huge difference. I'm also interested in track and that should help if I ever decide to get into it. I'll see if the 4.8 is indeed 4.875, if it is I wont bother 5.1, I just didnt want to drop from 4.88 to 4.80
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I’m also auto and i wouldn’t want anything more aggressive than the 4.56, auto fall flat on their face in 5th so we only get 1-4 to play with. 4th will top out at 105 with a 5.1, 109 with a 4.88, 117 with a 4.56. I had a slightly larger 24.9” tire and raised redline 100rpm to be able to hit 120 in 4th, was perfect for 0-120, 20,40,60-120s, FWY pulls with a 4.88 or especially 5.1 would be horrible as you’d either shift to 4th after like 1second or just start in 4th and everything will pull on you.
It’s highly dependent on what you want, how you drive, what you’re doing it for etc... from a dig a numerically higher FD ratio is faster, from a roll it can be slower in just as many situations as it will be faster depending on the ratio and what speed you are starting at. This also is a big factor on the track as corner exit speed and/or top straight speed may be lined up exactly to what FD you chose or exactly opposite to your FD and you end up being slower as you choose the FD to match the track / situation.
For a general DD / fun hwy puller I liked being able to hit 120, and be at optimal rpm / gear for starting a pull from 20 40 and 60 as those are typical roll speeds or daily situation speeds, or corner exit speeds to start from and the 4.56 is the most optimal/fastest for that with the 24.9” tire and 100rpm higher redline. With stock size tire and stock redline a 4.44 would be better In that situation.