Gear Ratio Question
#12
If it's not done correctly the gears will whine, so depends on how mechanically skilled you are. From what I've read, it seems like ~$400 is a pretty good median price
#15
http://www.latemodelrestoration.com/...r-End-Gear-Kit
$259.99 for everything I need... I think this will be okay haha.. Just got nice and slow...
#16
I just put 3.73's in my '05 on Friday. Well worth the change as it drives harder down low and through the midrange, but you lose a little top end speed.
Gears will cost the better part of $200, 3 Quarts good quality Diff Oil close to $50, If you do the bearings & racers add another $80-$90 for the kit, and the labour will run at about 4hrs so dependent on hourly rate if paying a shop.
Gears will cost the better part of $200, 3 Quarts good quality Diff Oil close to $50, If you do the bearings & racers add another $80-$90 for the kit, and the labour will run at about 4hrs so dependent on hourly rate if paying a shop.
#17
My new edge with a t45 revs at 2200 at 70 mph with 3.90s. I drove both 3.73s and 4.10s in a new edge and I could barely notice a difference with the 3.73s and the 4.10s are crappy in city. I am happy with my gear choice in this particular car however I have no experience with other models. And my mileage went up across the board with this gear in. I assume because it takes less pedal pressure to get to and maintain speed. To each their own tho. Any gear is an improvement over stock
#18
And that should be an axiom of rear gear diffs:
The deeper (numerically higher) the rear gear ratio, the faster potential acceleration but you sacrifice MPG and top speed.
The less steep (numerically lower) the rear gear ratio, the slower the potential acceleration but you gain a potentially faster top speed and get better MPG.
Potential top speed for a given rear gear can be calculated. All you need to know is the tire diameter, your overdive tranny gear ratio, and your engine's redline
I use the word "potential" everywhere because what I said above is NOT a guaranty.
Also, another thing one should consider is the tires and the suspension set-up and his torque at take-off at the line form a dead stop. If you go too deep of a rear gear and your engine is making crazy torque at take-off, you could very well hurt your runtime, namely by your suspension being overwhelmed and your car begins rapidly hump up and down from wheel hop like a hamster in heat. Or, the torque in 1st gear with such a deep rear gear could put so much torque at the wheels that your tires will break free and burn-out instead of grip.
The deeper (numerically higher) the rear gear ratio, the faster potential acceleration but you sacrifice MPG and top speed.
The less steep (numerically lower) the rear gear ratio, the slower the potential acceleration but you gain a potentially faster top speed and get better MPG.
Potential top speed for a given rear gear can be calculated. All you need to know is the tire diameter, your overdive tranny gear ratio, and your engine's redline
I use the word "potential" everywhere because what I said above is NOT a guaranty.
Also, another thing one should consider is the tires and the suspension set-up and his torque at take-off at the line form a dead stop. If you go too deep of a rear gear and your engine is making crazy torque at take-off, you could very well hurt your runtime, namely by your suspension being overwhelmed and your car begins rapidly hump up and down from wheel hop like a hamster in heat. Or, the torque in 1st gear with such a deep rear gear could put so much torque at the wheels that your tires will break free and burn-out instead of grip.
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