3.9 Tii
#1
wtf's a piston
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3.9 Tii
I know this is probably a useless thread but, I want to know if anybody is running the 3.9 rear end with a TII setup. How much more top speed would actually obtain? Is it worth the 1 second loss 0-60?
#2
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First, the 3.9 is an NA diff, and won't bolt up to a t2 driveshaft.
Second, I've used the 3.9 with a manual in my convertible. It made the car too luggy. I thought Id save a bit of mileage with it, but as it turned out the car felt a bit uncomfortable most of the time, resulting in more throttle being required, so that didn't turn out. Also, on the highway where hills or curves are present, I found myself constantly switching between 4th and 5th around 70mph. The car was too weak to stay in 5th, so you had to go to 4th more often.
Second, I've used the 3.9 with a manual in my convertible. It made the car too luggy. I thought Id save a bit of mileage with it, but as it turned out the car felt a bit uncomfortable most of the time, resulting in more throttle being required, so that didn't turn out. Also, on the highway where hills or curves are present, I found myself constantly switching between 4th and 5th around 70mph. The car was too weak to stay in 5th, so you had to go to 4th more often.
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