Gears

For an auto, 4.10:1.

At 65MPH the engine will still be loafing along at just 2500RPM in top gear, about 500RPM more than with 3.27s.

If that scares you (and it shouldn't) then go to 3.73s: 2300RPM...

vipergt said:

OK Im going ask this question again 4.10 or 3.73 in my auto. I drive about 50 miles a day @ about 60-65 mph and I run 93 Octane

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May I ask why you're running 93 octane ?

What other mods are done to your car ?

As for gears, it all depends on your future plans for the car. If you're planning on staying naturally aspirated, then go with 4.10's or 4.30's. If you're planning on adding a power adder in the future, like nitrous or a blower, then go with 3.73's. Not saying you can't run 4.10's with a power adder. However, you'll probably need to add a taller tire on the rear cause you'll most likely run out of gear in the 1/4 mile with 4.10's, a power adder, and 26in tires on the rear.

Gearbanger said:

Instead of asking the question again.....do a search on the "gears" subject. All the answers you need are already in the forum.

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This is good advice as well. There are numerous posts about gears in this forum. Do a search and see what you come up with.

trinity_gt said:

For an auto, 4.10:1.

At 65MPH the engine will still be loafing along at just 2500RPM in top gear, about 500RPM more than with 3.27s.

If that scares you (and it shouldn't) then go to 3.73s: 2300RPM...

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That sounds about right. I'm turning around 3000rpms, while cruising at 75mph.

Since you have a Predator you are already prepared to adjust the speedometer for the gear change. I drive about the same daily mileage you do except it's at 75-80 mph