Searching back in the 3.69 review I found this on the 3.9's. I had also thought about going 3.9's but the cost to wow factor over the 3.69's I already had didn't add up to me. To be honest I keep entertaining the idea of going 4.08's as the car is just a toy I rarely drive,even though the 3.69's are doing nicely. It's always the quest for more even though the car will already break traction just fine.
Quote:
Originally Posted by andre12031948
If I didn't have my 3:90 gear pumpkin laying around, I would have installed a stock 370z 3:69 gear pumpkin. My car shifted into 5th gear before the end of the 1/4 mile, so the 3:69 gears set up would be perfect/ideal & easy to find & install.
I will make my 3:90 work by tuning & raising the high H.P. point to 7,500 rpm & shifting points apx. 200 rpm. to 7,700 rpm with a redline at 7,800 rpm. It should do very well at the track. Test pipes, maybe better tires plus^^^^^that will put me into the 12.7's/12.8's with stock intakes & stock mufflers. Also it's real fine as a daily street car.
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Here are 2 reviews with 3.69's & 4.08's with the Auto:
7AT 3.692 Gear Review
4.08 Gear Install (7AT) Review