Stupid question: Gear ratio
05-13-2007, 12:52 PM
#1
Stupid question: Gear ratio
From what I can gather on the forums, a higher diferential gear ratio (from 3.55 to 4.10) will increase acceleration, right?
what are the other benefits, and what are the drawbacks?
what are the other benefits, and what are the drawbacks?
05-13-2007, 01:03 PM
#3
5th Gear Member
Join Date: Dec 2004
Location: Small walk way by big walk way
Posts: 4,717
RE: Stupid question: Gear ratio
If youwant to embarrass people then you need them and what Horwarmat saids.[sm=badbadbad.gif] If you plan on cruising 100 mph for two hours then it could be a little uncomfortable as far as rpms and torque out the ***.
05-13-2007, 01:59 PM
#5
5th Gear Member
Join Date: Feb 2007
Location:
Posts: 2,691
RE: Stupid question: Gear ratio
A definite drawback is the loss of overall top speed. What this adds up to is higher RPMs when trying to do daily driving.
People report on here that the rpms are not that insanely high, which is good, but remember cruising at a higher rpm than you would stock will use more gas and lessen engine life. We're talking higher rpms hour after hour, drive after drive, month after month. The engine wear and loss in mpg adds up.
I'm not against gears, seems like an awesome mod... But you might enjoy the benefits of an aluminum driveshaft more as this will yeild noticeable gains, like gears, but not affect mpg or rpm's while daily driving. A lightweight driveshaft would only help you get to your speed faster, same rpms, mpgetc.
Gears + install will cost, on average, $700. An aliminum driveshaft would cost $530, and you can usually do the install yourself.
Just my opinion.
aftermarket driveshaft for the win.
People report on here that the rpms are not that insanely high, which is good, but remember cruising at a higher rpm than you would stock will use more gas and lessen engine life. We're talking higher rpms hour after hour, drive after drive, month after month. The engine wear and loss in mpg adds up.
I'm not against gears, seems like an awesome mod... But you might enjoy the benefits of an aluminum driveshaft more as this will yeild noticeable gains, like gears, but not affect mpg or rpm's while daily driving. A lightweight driveshaft would only help you get to your speed faster, same rpms, mpgetc.
Gears + install will cost, on average, $700. An aliminum driveshaft would cost $530, and you can usually do the install yourself.
Just my opinion.
aftermarket driveshaft for the win.
05-13-2007, 02:20 PM
#7
6th Gear Member
Join Date: Sep 2006
Location: Gainesville, FL
Posts: 11,278
RE: Stupid question: Gear ratio
ORIGINAL: howarmat
I wouldnt say 700....500 is more like it. Gears for 140ish and 3-4 hours of labor.
I wouldnt say 700....500 is more like it. Gears for 140ish and 3-4 hours of labor.
Where's the best and cheapest place to buy the Ford racing 4.10 gears? This shop said only get motorcraft gears.
05-13-2007, 02:53 PM
#9
5th Gear Member
Join Date: Dec 2004
Location: Small walk way by big walk way
Posts: 4,717
RE: Stupid question: Gear ratio
I'm going to bet my gears willdestroy your driveshaft mod. Only my opinion. Also it's in my best opinion from what I read here that you will actually lose a few horsepower with gears.
05-13-2007, 03:29 PM
#10
Retired Mod
Join Date: Jan 2007
Location: Long Island, NY
Posts: 7,658
RE: Stupid question: Gear ratio
ORIGINAL: Joolander
so what rwhp and torque are we talking for 3.73 and 4.10?
so what rwhp and torque are we talking for 3.73 and 4.10?