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Coach has build three Cobra and one Coupe. In the first three he use a Tremec with .64 5th gear. The last Cobra he bought a Tremec with .84. He runs 3.25 and 3.31 gears in the last three cars. Tires about the same size.
At 70 mph the .84 trannie spins the motor at 2500 rpms. With the .64 it would be 2100. This winter he is going to change 5th from the .84 to a .64 set up.
I run a .64 with small block, 3.55 gears and 26" tires. I cruise at 2000 rpms at 68 mph.
I love my .64
Dwight
P.S. I have over 41,000 miles on my Cobra
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''Life's tough.....it's even tougher if you're stupid.'' ~ John Wayne
"Happiness Is A Belt-Fed Weapon"
life's goal should be; "to be smarter than inanimate objects"
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