Quote:
Originally Posted by FRS Justin
I would run a 4.56 ratio then it will still let first gear be usable and have a lot more bottom end. 120mph will be easy to reach in 6th 5th gear will max out around 104mph. The most I would do is a 4.88 but that is a extreme street gear and first is pretty useless.
When your ready to get a set call Mark at spencer fab in N.H. he will hook you up.
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Hey Justin, long time to talk
Why 4.56 ratio gives a so small top end in 5th gear? I was thinking 5th gear would give something closer to 120mph @7400 rpm. I am using a gear ratio calculator:
http://www.apexgarage.com/tech/gear_ratios.shtml
Is the actual speed much lower than the theoretical? I have a 3.7 FD and in 5th I max out around 145mph. In my car, the actual speed is the same with the theoretical.