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Old 03-28-2006, 06:20 AM   #1
Stewart
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Default 3.7's or 4.1 on a manual

I've read many reccomend the 3.7's for manuals and 4.1's for autos. Anyone here with 4.1's on the manuals, if so does the different become an annoyance in shifting more often or is the different negligible. What would you all reccomend.
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Old 03-28-2006, 09:21 AM   #2
LesteR723
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Default RE: 3.7's or 4.1 on a manual

most will tell you 3.73
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Old 03-28-2006, 11:56 AM   #3
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Default RE: 3.7's or 4.1 on a manual

Sorry for being a loser and not knowing... What is the difference? I hear everyone talking about "gears" but still am clueless here...still new to most of this stuff. Could someone please explain or point me twards somewhere were i can?
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Old 03-28-2006, 01:02 PM   #4
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Default RE: 3.7's or 4.1 on a manual

I have 4.10's in my manual car. It would be perfect if you ran a slightly taller tire than stock. The perfect gear is a 3.90, which adjusting tire size with 4.10 is possible. For example, you will increase the overall tire when going to a 20" rim most likely. It is at 3000rpm at 80mph in 5th gear.
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Old 03-28-2006, 01:26 PM   #5
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Default RE: 3.7's or 4.1 on a manual

so since i have 20's I should I invest in 4.10's
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Old 03-28-2006, 02:06 PM   #6
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Default RE: 3.7's or 4.1 on a manual

ina way yes... more rim diameter takes more hmpff to get moving, 4'10 will help you



and to the topicposter, rearend differential numbers are relative to the amount of turns your pinion rotates relative to your crown.... its a underdrive (AKA increase in torque)
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Old 03-28-2006, 06:02 PM   #7
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Default RE: 3.7's or 4.1 on a manual


Quote:
ORIGINAL: LesteR723

most will tell you 3.73
most people will be WRONG!

4.10s or nothin for BOTH trannies
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Old 03-28-2006, 07:51 PM   #8
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Default RE: 3.7's or 4.1 on a manual

on 4.1's though, I know the gear ratio is set higher so correcet if i'm wrong but that just means that your traveling faster in the lower rpms? How do 4.1's help on the highway? city?
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Old 03-28-2006, 08:53 PM   #9
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Default RE: 3.7's or 4.1 on a manual

ok as far as i understand...the 4.1's have more top end power and the 3.7's are more low end? i used to have a rice eater...we just cared about boost and the right tune to make power not gears! EXPLAIN!
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Old 03-28-2006, 09:55 PM   #10
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Default RE: 3.7's or 4.1 on a manual


Quote:
ORIGINAL: 8cd03gro

ok as far as i understand...the 4.1's have more top end power and the 3.7's are more low end? i used to have a rice eater...we just cared about boost and the right tune to make power not gears! EXPLAIN!
I believe it's exactly the opposite. 4.10's will give you higher rpm's at speed (but a killer take-off) thus reducing your top speed.

3.73's hit the sweet spot for me.
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