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ive seen the 6 speed upgrade kit for the f25, its spur cut gears wich would be very noisy. spur cut gears are extremly stong though. gm may have this for raod racing
it was 4.55. Our cars come with 4.10. 3.55 would make the gears even longer than stock????
yea my fault it is 4.55, but i want longer gears except fifth, .76:1 overdrive is just a little too long, a .78 sounds a lil better not overkill or anything i do want at least some decent mileage; note i took everything out of my car to go to the track including my passenger seat i got 33 mpg going 80. When i finally got to the track it had already closed: rain hour drive fro nothing