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Discussion Starter · #1 ·
When i did my engine swap i notice that the GT transmission was opened before. i want to find out if the previous owner might have changed the gears.
But is there a certain RPM and MPH differance between 3.37 gear ratio and 4.10's.
at 70mph im at 2,000RPM's on 5th gear. (is that any help?)
 

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gears go in the rearend not the transmission.. but 70 at 2000roms in 5th is normal
 

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First off you don't have 3.37's no one does. Second off gears go in your rear end...not your tranny. You prob have the stock 3.27's
 

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jack up the rear, watch the driveshaft as your turn the wheel.. if you get about 3.25 rotations of the drive shaft to 1 rotation of the tire you have stock gears... 4 rotations 4.10, less than 4 you have 3.9
 
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