how much 1/4 mile gain?
12-09-2005, 09:04 PM
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I went from 3.42's to 3.90's and didn't pick up hardly any at all from just that. I already had a PT4000 converter and sticky tires though. 7.87 @ 87 in the 1/8th to 7.81 @ 87 with a raceweight of just over 3700 pounds. I did pick up about a half of a MPH as well. 60' went from 1.67 to 1.63. This change you're proposing is worth a lot more with a stock stall converter in an A4 car. It should benefit M6 cars much more than it helped me also.
12-11-2005, 09:58 AM
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M6 with BFG DR's stock size 275/40/17. I can rev to 7k and now just barely have to shift into 4th at the beginning of the trap. All else being equal, how much gain with the gear swap?